Roads End Naturalist

Exploring the natural world as we wander at the end of the road


Dewlap-a-doo

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If it is meant to be, it will be.

~Anonymous Japanese photographer

I’m going to try to catch up on some of the many cool things we have witnessed in recent weeks as we travel to learn about our new surroundings. Melissa’s parents visited back in July and one thing they wanted to see was a moose, arguably one of the more difficult creatures to find in Yellowstone. And, indeed, we did not find a moose here in spite of our travels up through the northeast entrance, usually the best place in Yellowstone to locate the largest member of the deer family. But, her parents also wanted to visit Grand Teton National Park during their stay, and that location offers you a much better chance of finding a moose. Yellowstone is estimated to have fewer than 200 moose whereas Grand Teton’s moose population is closer to 500 animals. And to further prove that areas’ moosiness, there is even an unincorporated community named Moose within the park.

Oxbow Bend in Grand Teton National Park (a very moosey place) (click photos to enlarge)

So, off we went to the Tetons for a couple of days and, sure enough, we spotted a cow and calf moose high on a meadow from the road at a place called….Moose Junction. They were pretty far away but we got out and looked for a bit and then headed on, hoping to get a closer look at another moose and perhaps even a large bull. Driving the Moose-Wilson Road produced no results but in a discussion with another visitor we learned his family had seen a large bull moose on a campground road the evening before and it had supposedly been hanging out in that area for a few days. That set our agenda for the final day in the park. We drove to that area late in the day and soon spotted a few cars pulled off on the side along the river. And there it was, a moose, and a nice bull at that!

Our bull moose across the river in Grand Teton National Park. This is the view with my 500mm telephoto.

The moose’ antlers stood above the riparian shrubs, but the bulk of the animal was hidden as it browsed in the thick vegetation. It started moving and suddenly stepped out into the open.

This large bull moose had an impressive set of antlers, still covered in velvet

We shared our scope with some bystanders and loved hearing the oohs and aahs as they got a closer look at this beautiful beast. Melissa had recently figured out a good solution for a phone adapter for her scope and started filming the moose as it fed. We switched to my phone so I could get a few clips and I was very impressed by the quality of the images, even in the low light of late evening.

Bull moose filmed through a spotting scope with a Phone Skope adapter for our iPhones

By this time, we had a few mosquitoes making an appearance but when I looked at the footage later I could see a cloud of insects around the moose. Not sure if he was being sucked dry or whether there was some sort of hatch of aquatic insects happening.

The other thing I noticed was his impressive dewlap (also called a bell). Many animals from birds to lizards have this anatomical structure which is defined as “a fold of loose skin hanging from the neck or throat of an animal”. The purpose varies according to species. In Carolina anoles (I miss those little green lizards that frequented our yard in NC), the males have an impressive extendable pink dewlap that they show during courtship rituals and territorial disputes. In some birds, the dewlaps (often called wattles in birds) may help with thermoregulation and sexual displays.

The function of a dewlap in moose is uncertain, but it seems like a nice addition to the overall look of a beast that has an unusual appearance to begin with

Studies of the dewlap in moose have been inconclusive as to its exact function. Perhaps a dangling flap of skin may help in thermoregulation by dissipating heat from this extra surface area of vascularized skin. Or, it may serve some function in communication. Bull moose tend to rub their dewlap on females during courtship perhaps transferring scent to them. The size and shape of a dewlap may also indicate something of the health of a bull and give a cue to females of his worthiness and to rival males of his potential dominance. Then again, it may be some sort of vestigial anatomical feature that has lost all or most of its original function over evolutionary time. I suppose only the moose knows for sure. At the very least, it is a fun word to have around when discussing one of our most impressive large mammals.

Comments

10 responses to “Dewlap-a-doo”

  1. Ko Avatar
    Ko

    wow again and again and again!!!

    1. Mike Dunn Avatar

      Thanks again, Ko!

  2. Stringernc Avatar

    Thanks for sharing Mike – I love following you and Melissa’s adventures and always enjoy your backwoods trail cam videos. Also, thanks for including the lens you used – as a photographer it gives me a good idea of your viewing distance. Also, I’m interested in the iPhone adapter used on your Melissa’s spotting scope, the video looks great!

    1. Mike Dunn Avatar

      Glad you liked it. Obviously, the other images were cropped. Melissa did a lot of research on the scope adapters and one issue we were trying to avoid was having to buy a new case for our phones (most require you buy their case). Our iPhones are magnetic and she realized that the edge around the camera lenses on our phones was very similar to the one on the cases that Phone Skope sold so she just bought the adapter unit for her scope (each type of scope needs a different adapter) without the case. It worked perfectly. I have since purchased one for my scope (though I bought her a much better scope last Christmas so her videos will probably always be better than mine:)

  3. Eno Hiker Avatar
    Eno Hiker

    Hi, Mike. I enjoy reading your blog posts. Having lived in Durham, NC for 30+ years, I first discovered and enjoyed your blog when you were living in NC.

    I didn’t realize you and your wife had moved to the Yellowstone area until I caught up with a recent blog post. We’ve spent this Summer in Island Park, ID (about 30min S of W Yellowstone) volunteering with the USFS as bear educators in the local campgrounds. As such, we’ve been living in our RV at the Ranger District headquarters in Island Park.

    You might be interested to know that moose are frequent visitors to this area. We’ve had two occasions where a big bull moose walked right past our RV within about 10ft! We were inside both times. We’ve had a large bull moose that hung around for 4-5 days and a different bull moose who had some sort of defect that caused him to lose one of his antlers (a naturalist & USFS employee thought it might be a tumor since it was way too early to shed his antlers.) His velvet hung down loosely from where his antler used to be. We also saw a 2 different mama moose with their babies while kayaking Henry’s Fork (this is a very common way to see moose.) Recently, we had a young, smaller moose pass through our camping area. We couldn’t tell if it was a young male or female. I’m attaching a few photos of the moose we saw this Summer.

    Anyway, I just wanted you to know that Island Park is a great spot for seeing moose if you are interested. A bit of a drive for you but it’s a beautiful spot.

    Best wishes to you and your wife in your new Yellowstone adventures. The upcoming winter should offer you an incredible experience. If you’re interested, there is a guide named Bo Weldon who is based in Jackson. He posts incredible videos year-round of his adventures while guiding others in the Tetons and Yellowstone.

    Here is his profile link on Instagram: https://www.instagram.com/bo_knows_outside_?igsh=OGdvb2d4a3QwdzA=

    I have no affiliation with him. I just love the videos he posts of Grizzlies, wolves, moose, etc. from those two Parks. Thought you might as well.

    Cheers! JoEllen Mason

    1. Mike Dunn Avatar

      Wow, Thanks JoEllen. Sounds like you have had a very moosey summer and a great experience educating others about bears and bear safety. Appreciate the link to the guide as well as I always enjoy seeing what others are up to out here. if you ever travel through Yellowstone, give us a holler.

  4. ADRIENNE C PALMA Avatar
    ADRIENNE C PALMA

    Hi Mike and Melissa! I always enjoy reading your blogs and seeing the amazing photos!

    Keep them coming!

    All the best!

    1. Mike Dunn Avatar

      Thanks, Adrienne. Hope all is well with you.

  5. Judy Newton Scurry Avatar
    Judy Newton Scurry

    Glad your search was successful ! My best “moose” story was when we went on the UNC

    alumni trip to Yellowstone and Grand Teton

    and searched and searched…….my husband and his foursome found one and it’s call on the golf course in Jackson Hole!🤣we were told to stay away from calf in all circumstances!

    1. Mike Dunn Avatar

      I guess you never know where one will show itself! That could led to some interesting plays.

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Roads End Naturalist

Exploring the natural world as we wander at the end of the road

Copyright Mike Dunn and Melissa Dowland