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  • Elk Garden

    View toward Mt. Rogers from Elk Garden
    View toward Mt. Rogers from Elk Garden parking lot

    My Dad’s birthday and Mother’s Day are both the second week of May so I try to get home each May for a visit. As it turns out, it is also the prime time for a visit to one of my favorite areas in Virginia – the Mount Rogers National Recreation Area. Covering over 200,000 acres in southwest Virginia, the Mt. Rogers NRA contains four wilderness areas, mountain balds, high elevation spruce-fir forests, 500 miles of hiking trails (including a portion of the Appalachian Trail), beautiful mountain streams, wild ponies, and is adjacent to my favorite Virginia State Park, Grayson Highlands. But in early May, the place to be is Elk Garden. Easily accessible via Rt. 600, Elk Garden lies between the two tallest peaks in Virginia – Whitetop Mountain to the west and Mount Rogers to the east.

    Lush herbaceous layer in the forest at Elk Garden
    Lush herbaceous layer in the forest at Elk Garden (click to enlarge)

    Each May I always enjoy traveling back in time to early spring (relative to the Piedmont of NC) as we climb the winding road to an elevation of about 4400 ft. Climbing the trail from the parking lot toward Whitetop, the trees are just starting to leaf out and various neotropical migrant songbirds can be seen flitting through the branches. But the show is down below, in the rich herbaceous ground cover lying between the boulders and bordering the numerous small streams cascading down the mountain. This is one of the richest wildflower displays I know and I always love to spend some time with my camera capturing their beauty. This year, the cool weather delayed some of the flowers so the balance of blossoms was slightly different than past seasons. Here are some of my favorites seen a few days ago:

    Wake Robin
    Wake Robin (click to enlarge)

    Everyone seems to love trilliums. They tend to be big and often showy with bright colors. The name trillium refers to the “threeness” of these plants – three leaves, three petals, three sepals, and fruit with three ridges. The name, Wake Robin, refers to the blooming time of this plant (and other species of trillium) which often coincides with the return of robins in early spring. This particular species also goes by several other, less flattering names, including Stinking Willie and Stinking Benjamin, both of which refer to the unpleasant aroma of the blossom (go ahead, get down and stick your nose up to it the next time you find one). Lacking nectar, these flowers rely on deception to bring in pollinators which are primarily flies and beetles that are typically attracted to dead animals.

    Wake Robin, red form
    Wake Robin, red form
    Wake Robin, yellow form
    Wake Robin, yellow form

     

     

     

     

     

     

     

     

     

    This species is primarily a red-flowered one, which, when combined with the foul odor, mimics decaying flesh which attracts the pollinators. Less commonly they have white flowers, and even rarer still, are yellow-flowered plants. The petals on all varieties tend to turn pinkish with age. The flowers of this species nod toward the ground making them somewhat less noticeable, although the distinctive leaves quickly draw your attention.

    Trout Lilies
    Trout Lilies (click to enlarge)

    The bright yellow Trout Lilies cannot be overlooked – they stand out against the surrounding greenery for your attention as you hike. Only a small percentage of the plants usually flower in any season (some references say less than 5% typically). Flowering plants have two leaves whereas the vast majority in a population have only a single leaf. The upside down flowers close every night and the petals and sepals re-curve upward again every morning during their short blooming period.

    Fringed Phacelia
    Fringed Phacelia (click to enlarge)

    High on my list of favorites is the Fringed Phacelia, a low-growing annual that can blanket the forest floor with a carpet of white that resembles a late-season dusting of snow. The delicate fringed petals reward any hiker that kneels for a closer look. Some species of Phacelia in the western U.S. apparently contain compounds that can itch and sting causing a skin rash similar to poison ivy and giving the plant the unkind name of Scorpionweed.

    Spring Beauty
    Spring Beauty (click to enlarge)

    Spring Beauties appear to pop up from almost every available space in the ground cover at Elk Garden. They can be quite variable in the amount of color in the striped petals (this specimen was noticeably brighter than most).

    Spring Beauty Bee
    Spring Beauty Bee with loaded pollen baskets (click to enlarge)

    They have a tasty edible corm and are the primary source of nectar and pollen for the aptly-named Spring Beauty Bee. This foraging bee looked like it was wearing pinkish chaps due to its full pollen baskets (Spring Beauty pollen is pink).

    Wood Anemone
    Wood Anemone (click to enlarge)

    Like most of the spring ephemerals (those woodland wildflowers that bloom before the trees leaf out reducing the amount of light that reaches the forest floor), Wood Anemone has a short growing season of only a couple of months. Plants spend most of the year dormant as an underground rhizome. Studies have shown that these and many other spring ephemerals are now blooming earlier than they did just decades ago due to warming temperatures associated with climate change. One study of Wood Anemone showed they bloom an average of 15 days earlier now than they did in the early 1970’s.

    White Violet
    Violet
    Yellow Violet
    Violet

     

     

     

     

     

     

     

     

     

    Violets are scattered all along the Elk Garden trail. In addition to the well known purple-blue colored species, there are white and yellow violet species in this rich cove forest. Violets have two types of flowers – open and closed. The closed flowers (called cleistogamous) are often partially hidden under the leaves and are self-pollinating, ensuring at least some seed production even in years of poor pollinator success.

    Squirrel Corn grouping
    Squirrel Corn (click to enlarge)

    The plant that gives me the greatest delight when I find one along the trail is undoubtedly Squirrel Corn. The delicate, blueish-green foliage and unusual blossoms of this plant often occur in dense patches and immediately catch your eye.

    Squirrel Corn
    Squirrel Corn (click to enlarge)

    The flowers are somewhat heart-shaped with the upper lobes being more rounded than in the plant’s close relative, Dutchman’s Breeches. Squirrel Corn gets its name from its underground food storage structures, which look like corn kernels.

    Blue Cohosh
    Blue Cohosh (click to enlarge)

    A variety of other species carpet the ground throughout early spring along this section of trail including Blue Cohosh, Yellow Mandarin, False Hellebore, Jewelweed, Umbrella Leaf, Solomon and False Solomon’s Seal, Twisted Stalk, and many others. The region is so rich in wildflowers, birds, and other natural wonders that the local community center hosts an annual Mount Rogers Naturalist Rally each May with speakers, hikes and other programs. While this area is beautiful any time of year, spring in these mountains is truly spectacular.

  • Wrens in the Yard

    Caroilna Wren
    Caroilna Wren in brush pile in the yard (click to enlarge)

    While doing some chores yesterday (sweeping unbelievable amounts of accumulated pollen off the screen porch) I heard the resident Carolina Wrens scolding something. Since their new nest location is right off the screen porch I thought it might be me disturbing them, but it was so emphatic I decided to take a closer look. The nest this year is under the top of the propane tank, which sits off the screen porch.

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    Propane tank housing Carolina Wren nest

    One wren was bringing a food morsel to the nest and was still scolding when I went out (that is a neat trick, your mouth full of bug and you still can screech and squawk at the top of your lungs). Now I am thinking snake. I looked around and didn’t see anything, but then noticed something move on the support column for the porch.

    At first glance I thought it was a huge slug, but then realized it was the underside of a small loop of a snake’s body extending out from the other side of the support. I poked my head around and there was the cause of the wren’s concern – a young Black Racer. The snake was climbing down the support and quickly vanished into the pile of pipes and cinder-blocks stashed under the porch.

    Carolina Wren nest
    Carolina Wren nest (click to enlarge)

    I looked inside the propane tank with my flashlight and all was well – I could see at least 4 baby wrens at the entrance to the nest. The sides of the tank may (I stress may) be too slick for the snake to climb on, or perhaps it just had not yet zeroed in on where the nest was located. At any rate, it will be interesting to see if the baby wrens make it another week or so until fledging after such a close call.

    Caroilna Wren
    Caroilna Wrens have attitude (click to enlarge)

    Carolina Wrens are one of my favorite birds – always energetic; exuding perkiness with their inquisitive attitude, bounce in their step and their slightly cocked tail. They are monogamous, and maintain their pair bond and territory throughout the year. In spring, males may build several nests and the female chooses one to her liking. As many of you may well know, nests can be built almost anywhere there is a somewhat protected place or cavity a few feet off the ground. I have seen them in boots on a porch, under the hood of a truck, in a football helmet hanging in an open garage, and in a milk jug with the top cut out sitting inside a shed that had a gap under the door just large enough to allow a wren to squeeze through.

    Carolina Wren nest
    Carolina Wren nest (click to enlarge)

    Nests are dome-shaped with an entrance on the side. They are made with a variety of materials including dried grass, leaves, sticks, pine needles, mosses, feathers, paper, and string. Most I have seen also have pieces of shed snake skin (or of plastic film or wrap that resembles snake skin). Scientists speculate that snake skin use in birds nests (several species of birds routinely add snake skins) is a deterrent to would-be egg predators, especially mammalian predators such as flying squirrels, that might become prey to snakes. Elizabeth Medlin and Tom Risch of Arkansas State University conducted a study using artificial nests in a cavity (simulating Great Crested Flycatcher nests) and quail eggs with snake skins in some nests and not others. The results supported the notion that snake skins deter the locally dominant mammalian nest predator, flying squirrels, from entering a bird nest and eating the eggs. None of the 40 nests with snake skins were attacked. Of the nests without, 20 percent had eggs eaten by flying squirrels.

    Carolina Wren nest
    Carolina Wren at nest container from previous year (click to enlarge)

    I guess more study is needed to know if the plastic is as effective. I can’t quite tell from this photo whether that is real or faux snake skin in this nest. I am hoping this nest makes it, as it is always fun to see the wren family moving about the yard.

  • Another Great Day at Pungo

    I guess it isn’t enough to be a mere observer. It’s turning to the person on your right, or left, and stating with an undiluted sense of joy and inquisitiveness, “Did you just see that?”

    Mike McDowell

    Bass Lake Photo Club members capturing a bear
    Bass Lake Photo Club members, Rosa, Steve, and Petra, capturing a bear (click to enlarge)

    I had my first post-retirement outing yesterday with a great group of folks from the Bass Lake Photo Club. I gave a talk to their group in March and they saw an image of a bear on my desktop and asked where it was taken. Pungo, of course, and they said they wanted to go. While I have great luck getting good wildlife images on my own, and I have led several nature photography workshops over the years, there is a bit more pressure when folks are particularly interested in getting something like bear photos. I stressed there are no guarantees but that they would come away with some good information and a knowledge of the refuge and that seemed fine, so we set it up. I went down Friday afternoon to scout things out (even though I have been down twice in the past two weeks – hey, it is my favorite place in NC after all:).

    The wind was howling Friday with lots of cloud cover, so not ideal for photography. In the week since I had been down the local farmers that tend the crop fields on the refuge had moved in their equipment and started plowing for this year. Not sure if that or maybe the cold windy conditions were to blame, but the few bears I did see were very skittish, and uncharacteristically sprinted for cover as soon as they saw my vehicle, even at great distance. Hmmm, not a good omen. And the bitterns from last week were nowhere to be found. Bummer, looking like it could be a tough weekend for a group outing.

    Horned Lark
    Horned Lark (click to enlarge)

    The one cool thing I did see was a small bird scurrying at the edge of one of the freshly plowed fields – a Horned Lark. This is the only native species of lark to nest in North America. I have seen Horned Larks before in winter in this region, but never this time of year, although the Birds of North Carolina (http://www.carolinabirdclub.org/ncbirds/view.php?sort_order=2870) reports them as a permanent resident in parts of the Coastal Plain of NC. It is always exciting to see one, and especially to be able to watch one forage (it was gulping down moth pupae that the plowing had exposed).

    The next morning dawned windy, chilly, and completely overcast playing into my concerns for our group experience later that day. I drove over early to check things out and did see a Bald Eagle and lots of other birds, but no bears.

    Thistle with stalk eaten by bear
    Yellow Thistle stalk eaten by bear (click to enlarge)

    One thing I did see that intrigued me was a number of Yellow Thistle (Cirsium horridulum) plants that had been eaten (just the stalks). After looking around it was obvious that bears had been feeding on the stalks.

    Eastern Tiger Swallowtail on thistle
    Eastern Tiger Swallowtail on Yellow Thistle (click to enlarge)

    I photographed this plant last week on a warm day with butterflies on it, but here was evidence of use by another animal. I probably saw 30 or more plants that had the stalk completely missing with the flowers and seed heads laying on the ground next to the rest of the extremely spiny basal leaves. According to one resource, bears love the stalks of thistle, especially the newly elongated stalks. They can avoid the spiny-ness of the plant in several ways. Based on what I saw, they probably took off the top of the plant (they have been observed swatting it off with a paw) and then stripped the spiny leaves before consuming the tasty stalk (hope to witness that behavior some day).

    Ragwort flowers
    Woolly Ragwort flowers (click to enlarge)

    I drove back into Plymouth to meet the group and escort them out to the refuge. There were four: Rick, Steve, Petra, and Rosa, and they were all up for the day in spite of the weather conditions. Steve even mentioned he had rented a telephoto lens for the day to try to get some decent bear pics (Uh-oh, no pressure there). I gave the other car a walkie-talkie so we could communicate and off we went. I decided to stop and photograph other subjects of interest in case the bears were skittish again today. We got out to look at Spatterdock flowers and pads in the canals and Woolly Ragwort flowers that were blooming in abundance along the roadsides. The upward-pointing silky-haired leaves of Woolly Ragwort are adaptations to reduce water loss in the hot sun by reflecting sunlight (hairs) and reducing the surface area exposed directly to the sun (vertical orientation).

    Corn Snake
    Corn Snake in defensive posture (click to enlarge)

    Shortly after arrival at the refuge I was amazed to see a snake out in the chilly weather as it crossed the road. Jumping out of the car I cut off its escape and everyone got great shots of a beautiful Corn Snake. Later in the day we had a similar encounter with a cooperative Black Racer.

    Virginia Chain Ferns in swamp
    Virginia Chain Ferns in swamp (click to enlarge)

    Driving along the south side of the lake you pass through a beautiful swamp forest with huge stands of ferns. The colors and patterns are gorgeous so we got out and spent some time looking around and got lucky with a few breaks in the clouds The large stands back off the road are Virgina Chain Fern (Woodwardia virginica), but close to the road were some easily accessible Cinnamon Fern (Osmunda cinnamomea).

    Cinnamon Fern
    Cinnamon Fern (click to enlarge)

    Most ferns carry their reproductive spores on the undersides of the fronds; cinnamon fern (and other species of Osmunda) have separate and distinctive fertile fronds in addition to the typical sterile fronds. A close look reveals the tiny round brownish sori that release the spores.

    Cinnamon Fern fertile frond tip
    Cinnamon Fern fertile frond tip (click to enlarge)

    Folks seemed happy, but, we had come for bears. So, off we went again in search of them. Finally, I spotted one in one of the marsh management areas that had been drained for the summer. We drove as close as possible and got out and could now see two bears through the trees.

    Black Bears in marsh
    Black Bears in marsh (click to enlarge)

    Not everyone was able to get a clear shot through the dense line of vegetation, but, we had seen bears! My self-imposed pressure was lifted. The two bears eventually wandered off into the woods and we continued down the road about one hundred yards and there was another one!

    Black Bear foraging on mud flat
    Black Bear foraging on mud flat (click to enlarge)

    This one was a bit far off so I briefed the group on the finer points of stalking bears (crouch down and move quietly when the bear has its head down foraging and then stop when it looks up). Of course, having the wind in our favor (blowing from the bear toward us) was the only reason we could think about getting close enough for a picture. We moved forward stopping whenever the bear raised its head. Everyone was able to get several good shots until the bear ambled off into thicker cover. We were on a roll!

    We then went over to the place I call New Bear Road due to its abundance of bear sign. It did not disappoint. As we walked down the grassy path, first one, then two, then three bears walked out of the woods and started heading towards us. I had everyone crouch off to the side of the path and we watched and waited.

    Black Bear sow and two yearlings
    Black Bear sow and two yearlings (click to enlarge)

    The bears went back into the woods at one point and we moved a bit closer. They all three came back out and were grazing as they again walked our way. The wind was still in our favor but a group of five people is not an easy thing to hide and it started to look as though the female could sense something was not quite right.

    Black Bear sow checking out the surroundings
    Black Bear sow checking out the surroundings (click to enlarge)

    She stood up a few times to look around and threw her nose in the air several times trying to catch a scent. But I don’t think she ever smelled us, so the group of bears continued to hang out and allow us to watch them feed, play, and just be bears. It was an extraordinary several minutes. She finally rounded up her yearling cubs and they headed back into the woods leaving our group with awesome memories.

    One of our folks had to leave a bit early so we drove back to the entrance to his car. We then drove through the refuge toward our final hiking spot, seeing more bears along the way. In fact, what I had feared would be a tough day for spotting bears turned out to be a great one – 19 bear sightings!

    Our last hike was along a dike out toward a wheat field where I had seen bears last week. I like this walk because you pass along a wetland management area that often has abundant wildlife. We saw plenty of shorebirds, egrets, herons, and one large raccoon. Then we saw three bears walking in the opposite direction from us on a parallel dike across the wetland area. We watched for awhile until they passed and then continued toward the woods where we had just seen three other bears. As w neared the trees I heard some low noises, and then what we assumed was the sound of suckling bears. Then we spotted them – a sow with two yearling cubs in dense vegetation below us. She looked our way, walked a few feet and the sounds continued. Black Bears nurse their young for about a year so I am guessing the two yearlings were still nursing and that is what we could hear. Amazing. The sounds stopped and we assume the bears wandered back into the woods. Satisfied it could not get any better we headed back to the cars, scolded along the way by several Greater Yellowlegs feeding in the wetland area. Then we heard the snorts/barks of two River Otter swimming in the canal below us. What a way to finish an incredible day.

    River Otter
    River Otter (click to enlarge)

    I experienced some amazing things at Pungo the last couple of weeks, mostly by myself. But, as the quote at the start of this blog states, there is something magical about sharing an experience with others, especially others that appreciate nature and are willing to learn and to take whatever is dealt to us in terms of weather and wildlife. We were incredibly lucky to have been able, as a group of five, to experience our time with the bears just doing what bears do. I am so grateful that places like Pocosin Lakes National Wildlife Refuge (aka Pungo) exist and are managed by dedicated staff so that visitors like us are able to have these experiences. I encourage everyone to support your local parks and refuges and volunteer to help them meet their needs (and make legislators aware of their needs) in these increasingly difficult budget times. It is important not only for the wildlife, but for us all to have such places.

    Plans to protect air and water, wilderness and wildlife are in fact plans to protect man. Stewart Udall

    Species list for Pocosin Lakes NWR May 3/4, 2013:

    Mammals:

    Black Bear, White-tailed Deer, Raccoon, Nutria, River Otter, Eastern Cottontail Rabbit, Hispid Cotton Rat (in talons of Northern Harrier)

    Birds:

    Double-crested Cormorant, Mallard, Canada Goose, Tundra Swan, Wood Duck, Northern Harrier, Bald Eagle, Great Blue Heron, Great Egret, Snowy Egret, Greater Yellowlegs, Killdeer, Spotted Sandpiper, Solitary Sandpiper, Laughing Gull, Wild Turkey, Northern Bobwhite, American Crow, Pileated Woodpecker, Red-bellied Woodpecker, Red-headed Woodpecker, Mourning Dove, Northern Cardinal, Blue Jay, Tufted Titmouse, Northern Mockingbird, Orchard Oriole, Blue Grosbeak, Indigo Bunting, Common Yellowthroat, Swamp Sparrow, Red-winged Blackbird, Common Grackle, Horned Lark

    Herps:

    Painted Turtle, Yellow-bellied Slider, Corn Snake, Black Racer, Pickerel frog, Southern Cricket Frog, Southern Leopard Frog

  • A Bounty of Bluebirds

    Bluebirds  RE-6
    Male Eastern Bluebird (click to enlarge)

    A friend posted a picture yesterday of bluebirds in her nest box. So I went out this morning and checked the one box I have that can be easily opened, and it looks like a good bluebird spring! The male and female were watching me as I went over to the box and opened it so I didn’t stay long and just took a shot with the iPhone instead of the usual gear, but it is always exciting to see the first babies of spring. These guys look like they are just a couple of days old at most and still in that reptilian stage of development. I am sure the cool, wet weather the past few days has made for difficult hunting for the parents but the sunshine today promises easier meals for these young.

    Bluebird nestlings
    Bluebird nestlings (click to enlarge)

    I have four nest boxes scattered around the yard and garden area (three out in the open and one in the woods) and have seen bluebirds coming and going from all four, so this could be a very good spring for bluebirds. Looking forward to following the progress of these and the other local breeders during the coming nesting season.

    How readily the bluebirds become our friends and neighbors when we offer them suitable nesting retreats!
    – John Burroughs,1925

    Bluebird houses
    Bluebird nest box
    Bluebird houses
    Nest box
    Bluebird nest box made with hollow log
    Nest box
    Bluebird houses
    Nest box
  • Crossvine

    I am a native plant promoter and have been for many years. While there is nothing wrong with planting ornamentals in the landscape (as long as they are not potential problematic invasives) I appreciate getting to know our native species and encouraging them in my landscape and in those of schools and other public areas where I work. A connection with native species is just one more way to help people become better stewards of our natural areas. And I have a particular fondness for spring blooming species like Crossvine, Bignonia capreolata.

    Crossvine flowers on ground beneath vine
    Crossvine flowers on ground beneath vine

    I remember seeing my first Crossvine blossoms many years ago – lying on the ground, not hanging on the vine. I looked up and finally saw the vine with attached blooms way up in the top of an ash tree. This may be why this beautiful vine has not caught on more with homeowners – relatively few people see it in its glory because it often grows 50 feet or more into the canopy.

    Crossvine planted on cedar snag
    Crossvine planted on cedar snag

    But if planted along a fence, trellis, or even a dead snag where we ground-dwellers can appreciate it, Crossvine can be spectacular. I once stuck a cedar snag in the ground and planted a variety of Crossvine that had more orange than most wild specimens and it provided a beautiful spray of flowers every April and early May.

    Crossvine flower close-up
    Crossvine flower close-up (click to enlarge)

    The bloom time, color and shape of the flowers hint that Crossvine is a favorite of Ruby-throated Hummingbirds returning to their breeding grounds in the southeast. When a hungry hummer pokes its head and bill into the flower it is likely to touch the flower parts, which are clustered near the roof of the flower tube.

    Flower showing pollination
    Cut-away of Crossvine flower to show pollination

    This transfers any pollen on the hummingbirds’ head to the pistil (female part) and dusts its forehead with new pollen from the anthers (male part of flower) as it exits and zips to the next Crossvine blossom. I have also watched bumblebees and a few swallowtails visit the blossoms. It is also a host plant for the Rustic Sphinx Moth, although I have never seen one feeding on it (yet).

    Crossvine leaflet
    Crossvine leaflet (click to enlarge)

    Like its close relatives, Trumpet Creeper and Catalpa, the flowers of Crossvine produce long pods filled with flat, winged seeds that are wind-dispersed. It also spreads from root sprouts and can be found creeping along the ground in many places in the Piedmont and Coastal Plain, especially bottomland forests. The leaves are a bit unusual in that they are really leaflets divided into three parts – two shiny, semi-evergreen leaves, and between them, a leaflet that is modified into a coiling tendril, which allows the vine to cling to tree trunks, fences, and almost anything else it touches. The leaves are a dark green in summer and often turn purplish-green in winter before falling right before the new bright green spring growth appears.

    Crossvine cross-section
    Crossvine cross-section (click to enlarge)

    While I think the leaf arrangement as the vine climbs up a tree trunk has a resemblance to a cross or a bent “X”, the plant is supposedly named for the cross pattern seen in the pith when you cut a cross section of the vine.

    Crossvine flowers
    Crossvine flowers on garden fence

    Do yourself and your hummingbirds a favor and plant one of these beautiful native vines in your landscape this season and you can enjoy it for years to come.

  • A New Invader

    Kudzu Bug
    A new invader in my garden (click to enlarge)

    While looking for critters in the garden last summer I noticed a bug I had never seen before – an odd-shaped little brown insect. I looked in my insect guides but didn’t see anything that was a match and then something probably came up to distract me and it was filed under “things to look up some day”.  Then as cooler weather approached I started noticing clusters of these bugs congregating on the tips of the fig tree branches and I became worried. Spending a few minutes on Google enlightened me as to this new critter that I am now seeing again this spring in my garden.

    Kudzu Bug
    Kudzu Bug (click to enlarge)

    The Kudzu Bug, aka Megacopta cribraria, is native to India and China. It was first spotted in the U.S. in October of 2009 in a few counties in Georgia. A year later, the insect was confirmed to be present in more than 60 north and central Georgia counties as well as limited distributions in North and South Carolina. By last year, when I first saw it, it had been confirmed in almost all of North Carolina and three other southern states. The rapid spread is amazing.

    Kudzu bugs are so-called because they feed on plants in the legume family including invasive plants such as kudzu and non-native wisterias. But they also can cause significant damage to soybeans and other bean crops and this is very worrisome to farmers throughout the south (and maybe beyond).

    These new invaders also pose a potential nuisance to homeowners, especially when cold weather approaches and large numbers of the insects look for places to overwinter. In fact, the first reports of this species from Georgia were because large numbers were congregating on warm, sunlit walls of homes in a few counties. Calls to pest control and extension agents’ prompted further investigations into this unusual insect. And it turns out, Kudzu Bugs, like Kudzu vines, proliferate unchecked because they have no natural enemies in North America.

    Kudzu Bug
    Kudzu Bug – note flattened posterior, a key diagnostic feature (click to enlarge)

    Their olive to brown coloration, nearly hemispherical body shape and their flattened posterior edge easily identifies the bugs. Some similar-looking native species have a rounded posterior.

    Kudzu Bug
    Kudzu Bug, ventral view (click to enlarge)

    In addition to crop damage, Kudzu Bugs are problematic because they can exude a chemical that smells bad, can stain surfaces and cause skin irritations in susceptible individuals (so it is best not to crush them). Researchers at North Carolina State University and other venues are working to learn more about the life history of this species and how to control it. For more information, check out this web site – http://www.kudzubug.org/.

  • A Cup’s Worth of Birds

    Summer Tanager
    Summer Tanager (click to enlarge)

    Yesterday morning I sat out by the garden with a cup of coffee to listen and watch for birds – spring migration is in full swing. Here are the species seen or heard in about 45 minutes of sitting and sipping:

    Red-tailed Hawk, Red-shouldered Hawk, Turkey Vulture, Yellow-billed Cuckoo (first of season), American Crow, Blue Jay, Red-bellied Woodpecker, Downy Woodpecker, Mourning Dove, White-breasted Nuthatch, Pine Siskins (still a few around surprisingly), Summer Tanager, Scarlet Tanager, Eastern Bluebird, Wood Thrush, American Goldfinch, Chipping Sparrow, White-throated Sparrow, Field Sparrow, Indigo Bunting, Carolina Chickadee, Tufted Titmouse, Northern Cardinal, Yellow-rumped Warbler, Black and White Warbler, Northern Parula Warbler, Blue-gray Gnatcatcher, Ruby-throated Hummingbird, Eastern Wood Peewee, Great Crested Flycatcher, Red-winged Blackbird.

    Ruby-throated Hummingbird-4
    Ruby-throated Hummingbird (click to enlarge)

    Not a bad list for one cup of coffee…

    The afternoon before there were two Rose-breasted Grosbeaks at one feeder and this evening I also heard a Great Horned Owl. I love spring (and good coffee).

  • Black Swallowtail eggs and larvae revisited

    Black Swallowtail egg on parsley
    Black Swallowtail egg on parsley on day 1 (click to enlarge)

    Since I have what might be considered by some an abnormal fascination with caterpillars, I decided to keep track of the development of the Black Swallowtail eggs from the garden. The photo above is what a typical egg looks like shortly after it is laid.

    Black Swallowtail egg hatching
    Black Swallowtail egg just prior to hatching (click to enlarge)

    Yesterday I was watering the garden and found an egg that was darker, indicating it might be close to hatching. I brought it in and took a closer look. You can see the larva inside if you look closely. The larva appears to be curled on the lower and right side of the egg with the head capsule near the top. There is also a dent in the egg so I was a bit worried that something had happened to it (or is this typical prior to hatching?).

    I started taking photographs every few minutes and checking the egg for changes in between dinner ad catching up on some Daily Show episodes I had missed. Well, as my luck would have it, I looked at one point and the little guy had chewed his way out already….I had missed it.

    Black Swallowtail egg hatching
    Black Swallowtail larva just after hatching (click to enlarge)

    As most species do, the larva began to consume the egg shell. There are no doubt valuable minerals and maybe even symbiotic bacteria associated with it so it makes sense to recycle the shell. The tiny caterpillar was eating very slowly so the shell was not completely consumed for over an hour after it hatched.

    Black Swallowtail egg hatching
    Black Swallowtail first instar larva consuming the egg shell (click to enlarge)

    Meanwhile, the caterpillar I had photographed a little over a week ago has undergone its first molt. This one is feeding on rue and it seems the larvae tend to grow more slowly on that host plant than on fennel, parsley or carrots. Most caterpillars molt their skin five times from hatching to becoming a pupa. When ready, they typically spin a silken pad and attach themselves with their prolegs and become still for a day or two as changes take place for the molt. They then crawl out of their old skin and rest for an hour or two while their new skin hardens. Just like with the egg shell, they often eat their old skin for the nutrients. In the photo below you can see the shriveled first instar skin (excuvia) and detached head capsule lying alongside the newly molted and much larger second instar larva.

    Untitled
    Second instar larva next to shed skin and head capsule (click to enlarge)

  • The Strange Ways of ‘Possums

    Opossums mating
    Virginia Opossums mating (click to enlarge)

    I promised a post on this unusual encounter last weekend at Pocosin Lakes so here goes (I should warn you this may be for mature audiences only)…I started my morning with a sighting of a pair of Virginia Opossums (aka ‘possums) mating at the edge of a field just after sunrise. I have been “fortunate” enough to run across mating ‘possums three times in my woods wanderings over the years and each time noticed a behavior that I had once read about and to this day still don’t quite understand – but more about that in a second.

    Opossum in tree
    Opossum in tree (click to enlarge)

    Possums are definitely unusual mammals. Here are a few reasons why:

    • They are North America’s only marsupial (pouched mammal, like Kangaroos)
    • When confronted by a dog or potential predator they often feign death (play ‘possum)
    • Their skull contains the most teeth or any North American land mammal (50)
    • They appear immune to the venom of pit vipers like rattlesnakes and copperheads
    • Opossums, for their size, are one of the shortest-lived animals in the world with few in the wild making it into their second year
    • They have a notoriously tough time crossing roads (related to above?)

    But their uniqueness is most noticeable when it comes to their unusual reproductive habits. Female opossums generally raise two litters per year with the breeding season running from January through early summer. Males are known to make a peculiar constant clicking noise as they amble in pursuit of females. Females are only receptive for a short period of time and will hiss, click their teeth and threaten biting if not ready. When at last he does find a receptive female, he bites the fur on her neck and then climbs on her back (you can see wet matted fur on the top of the females’ neck if you look closely at one of these pictures).

    Opossums mating
    Opossums mating (click to enlarge)
    Opossums mating
    The right side roll (click to enlarge)

    He then grasps her hind legs with his hind feet and then they both roll over on their right sides to copulate (this is the behavior I have witnessed all three times I have seen it – the “right side roll”). Studies have shown (I just love it when this phrase is used…who studied this and why?) that if for some reason the mating pair remains upright or falls over to the left, mating is less likely to be successful. Apparently a researcher in the 1950’s failed to find sperm in the female’s genital tract after the pair remained upright or fell to the left…go figure. Copulation lasts 20-30 minutes.

    There are a few other oddities about ‘possum mating that have led to some interesting folklore. Turns out the male ‘possum has a bifurcate (forked) penis. Since early observers could not find a corresponding dual opening in the female they deduced that male ‘possums must mate with a female in her nostrils and she impregnates herself with a sneeze…this is actually part of mountain folklore. But, it turns out that the female has a double set of everything as well. And even though male opossums deliver a low sperm count (~3 million sperm compared to a male rabbit that inseminates a female with ~150 million sperm), the sperm are remarkably efficient. They, too, are paired. That’s right, ‘possum sperm pair up by sort of fusing their “heads” together then beating their tails together, making them far more efficient at reaching their goal. Another go figure.

    All of this rather unusual reproductive ability naturally leads to an unusual birth, with baby opossums being born a scant 12-13 days after their parents mate. The bean-sized “embryos” then must crawl from the birth canal to the mother’s pouch, where they will remain for about two months as they develop into something that looks more like a ‘possum baby.

    Virginia Opossum
    Virginia Opossum (click to enlarge)

    So, the next time you see one of those “grinning ‘possums”, think about all the amazing traits that go into making them one of our more endearing woodland critters.

    Two wonderful references provided much of the information related here:

    THE OPOSSUM: ITS AMAZING STORY

    By William J. Krause and Winifred A. Krause

    Published by the Department of Pathology and Anatomical Sciences, School of Medicine, University of Missouri, Columbia, Missouri (available online as a pdf)

    and…

    Advanced ‘Possumology in

    Wildwoods Wisdom, Encounters with the Natural World

    By Doug Elliott

  • A Spring trip to Pungo

    Sunset at Pocosin Lakes NWR
    Sunset at Pocosin Lakes National Wildlife Refuge

    This weekend I decided to get back to my favorite North Carolina wildlife area – Pocosin Lakes National Wildlife Refuge. When I first started going there back in the early 80’s, it was known as Pungo National Wildlife Refuge and it was centered on Pungo Lake, an important wintering area for waterfowl. In the early 90’s the refuge added over 90,000 acres and changed the name to Pocosin Lakes National Wildlife Refuge (although I still often refer to it as just Pungo). I usually make 10 or more trips a year to the refuge, most in winter when the thousands of wintering waterfowl provide an unsurpassed wildlife spectacle. But in the past few years I have enjoyed visiting in the warmer months to see another side of this unique area. On this trip I was hoping to see and photograph some of the Black Bears that are so abundant at Pungo. The weather was perfect – crisp air and very still. It was obvious that the storm the previous night had dumped a lot of rain as the fields contained standing water and the often-problematic dirt roads were still a bit slippery.

    I looked for wheat fields, as I know that bears love to graze on wheat. The refuge has an agreement with local farmers who plant hundreds of acres of refuge land with crops (mainly corn, soybeans, and winter wheat) and in exchange they leave a certain percent for the wildlife, especially the wintering waterfowl.  No bears yet in the small amount of wheat on the refuge so I kept driving to check out more areas.

    I pulled over at one of their managed marshes and got out to see if I could see or hear anything. There were a couple of late American Coot, a Greater Yellowlegs, and a Great Egret. I then heard a clucking sound a few feet from me in the marsh grass, but I couldn’t see anything. It sounded like a bird – I was guessing some sort of small rail. It moved away so I assumed it might be an alarm note and I had disturbed it.

    American Bittern calling in marsh at Pocosin Lakes NWR (best with volume turned up)

    Then, from farther out in the marsh, came a sound I knew only from audio recordings – the bizarre mating call of the American Bittern.  It reminds me of the sound of large bubbles in the office water cooler.  I was amazed to hear one call, then another, and another. Three bitterns calling, and I could not see any of them. They kept calling back and forth and I kept looking, but no luck on spotting the callers, although I did see four bitterns fly into the marsh during that time. Surprised to see so many bitterns in one small marsh, I did some research online that night and found a great web site for this type of information – Birds of North Carolina (http://www.carolinabirdclub.org/ncbirds/accounts.php). It says that bitterns are most numerous in our state during migration (in April and May for spring migration). Below is a pic of one at Mattamuskeet from last winter, when they are not nearly as abundant.

    American Bittern
    American Bittern taken at Lake Mattamuskeet last winter (click to enlarge)

    After about an hour of enjoying the scene, I decided to go look for what I had come for – bears.  I could see two bears out in the wheat fields but I drove to North Lake Shore Drive (aka Bear Road – before they had road signs on the refuge I made up names for some of the more memorable ones) to see if any were out in that usual hot spot. As if on cue, one bear came out of the woods a few hundred feet beyond the gate.  But there is no wheat in the fields along Bear Road this year so I went back to the other location and now there were six bears out feeding.  It was still overcast and the bears were over one hundred yards away so not a good photo opportunity.

    Black Bear after sunset
    Black Bear at sunset along “New Bear Road” (click to enlarge)

    I drove a little further and saw a bear silhouette down a grassy side road – this one has been dubbed New Bear Road since it tends to produce bear sightings almost as regularly as the original Bear Road (I know, not very inventive names).  And, as luck would have it, just then the sun dipped below the cloud cover flooding the area with a golden light that looked like it would last the 15 minutes or so until sunset. So, I grabbed the camera and scrambled down the side road. The bear was so busy eating grass that it never looked up. I was able to get close enough for a couple of shots before the sun set, Turns out there was another bear off to the side of the road and they both gradually ambled away as I headed back to the car.

    Swamp scene from Mattamuskeet boardwalk
    Swamp scene from Mattamuskeet boardwalk (click to enlarge)

    The next morning started off with a beautiful sunrise and the unusual site of a pair of opossums mating at the edge of a cornfield (more on that in a later blog).  The wind picked up and after driving slowly around the Pungo Unit for an hour I had managed only one bear butt, so I decided to head for Mattamuskeet National Wildlife Refuge about 30 minutes east. By the time I got to Mattamuskeet, the wind was howling and there just were not many birds or other critters to be seen. I got out and walked some of the short boardwalks and experimented with the camera on my iPhone.

    Six-spotted Tiger Beetle
    Six-spotted Tiger Beetle (click to enlarge)

    At one point I crawled around on my belly on a boardwalk for about 30 minutes “chasing” several Six-spotted Tiger beetles, hoping to get a close-up of these beautiful beetles. And this was after I had been checked by the federal game warden who thought I was acting a little suspicious! Turns out they have problems with people illegally collecting snakes and other critters on the refuge for the pet trade, etc. and when he saw me driving slowly along the road and getting out to look at things in the bushes, he thought he better check it out. He was a very nice guy and it is good to know there are people out there keeping an eye on things.

    American Bittern
    American Bittern – the one calling about 50 yards away (click to enlarge)

    Returning to Pocosin Lakes I went straight to the bittern marsh determined to find one of the callers. The wind may have subdued them a bit but I finally had two calling in front of me, one off in the distance and one so close yet invisible that it was over-the-top frustrating. Finally I found one – the one off in the distance at about 50 yards. After watching his behavior, it was even more excruciating that I could not find the close one, who could not have been more than ten yards from me. The caller was standing upright in the marsh, turning his head from side to side, then he would lower his head, giving the clucking sound a few times, and then launch into the water cooler call and with each “bubble release” he would snap his head up and down rapidly with bill wide open.  He repeated this 3 to 5 times and then returned to the upright stance. The closer bird must have been behind the one tall clump of mash grass and remained invisible.

    Having satisfied that goal I debated whether to stay and try to capture a picture of the close one if he ever moved, or go try for bears. The wind was still blowing hard but it was from a good direction as far as getting close for some possible bear photos so I decided to give it a try. I parked at the start of new bear road and hiked in about a mile to the edge of the wheat field. The bears were coming out of the woods into the field and I positioned myself at the boundary of the two in hopes of getting them crossing over. Ironically, I sat next to a large bed that had been scooped out of the side of the dike by a bear. I then waited (which is what a lot of wildlife photography is about)…and waited. One bear had made it into the field before I got settled, but for the next hour, only one deer and a Bald Eagle came close.  When I checked the wheat field, there were now four bears in it – three had managed to come in at the far end of the woods where I could not see them from my low position.

    Young Black Bear walking on dike
    Young Black Bear walking on dike (click to enlarge)

    Then I saw one headed my way. It was a youngster from last year. Soon a sibling joined this bear and they began running around and playing, then back across the dike into the wheat field (which was out of my view on the other side of the dike, so in order to check it, I had to slowly stand up and look over).

    Young bears
    One young bear tries to stand and look around, the other wants to play (click to enlarge)

    The young bears came back. One was curious about either my shape or the camera shutter noise and would stand and look in my direction but its playful sibling would jump on it every time it started to stand. Then they would amble back to the wheat field and continue to play. For the next 30 minutes I had bears crossing back and forth on the dike from woods to wheat field. I was about to leave when a larger bear (still not a huge one by Pungo standards) came walking down the dike toward me. As he approached, he kept looking in my direction and finally decided something was not quite right. He slowly turned and ran about fifty feet, and then with one more glance back at me, went down into the wheat field for dinner.

    Last Black Bear of the evening
    Last Black Bear of the evening (click to enlarge)

    As I crouched and walked away I glanced back at the wheat field. There were all six bears out feeding in the golden light…simply beautiful. My goal is always to get a decent image without disturbing the wildlife. That is sometimes easier said than done. Tonight, the wind was in my favor and it allowed me to get close enough and yet the bears could not smell me. While they seemed curious a couple of times, I don’t think they were ever really spooked.  I really like sharing wildlife encounters with people, but it is difficult, if not impossible, to provide a group with the type of experience I had yesterday. The good news is it is possible to give people a great experience in a place like Pungo by allowing them to see bears and other wildlife through binoculars and spotting scopes. I have been lucky enough to do that for the past 30 years and I look forward to sharing more experiences in these special places in the years to come.  But getting close-ups of wildlife often requires lots of patience, the right gear (in this case a long lens), a little luck, the right environmental conditions, and sometimes, just being out there alone so you can blend in and become part of the landscape.

    More information on the refuge and their public events can be found on their web site, http://www.fws.gov/pocosinlakes/, and on the web site of their support group, the Friends of Pocosin Lakes, http://www.pocosinlakesfriends.org/.

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