Re: [cobirds] a Williamson's Sapsuckers nest in Boulder County

My 2 cents worth: To me these marks look more like bear claw markings. I don't think a mountain lion would dig in so deeply into the bark or make such a large hole to get to the young. 

Deb Carstensen, Arapahoe county 

Sent from my iPhone

On Jul 6, 2022, at 5:39 PM, elena <elena@indra.com> wrote:

Cara Stiles and I went to Caribou Ranch for the Indian Peaks Bird Count, and had a pair of Williamson's Sapsuckers feeding young in a nest in an aspen tree.  

Elena Holly Klaver

United States Court Certified Interpreter

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I acknowledge that I live in the territory of Hinóno'éí  (Arapaho) and Cheyenne nations, according to the 1851 Treaty of Fort Laramie, and that Colorado's Front Range is home to the Ute and many other Native peoples.  Reconozco que vivo en el territorio de las naciones Hinóno'éí (Arapaho) y Cheyenne, según el Tratado de Fort Laramie en 1851, y que el estado de Colorado al este de las Montañas Rocosas es territorio de los Utes y muchos otros pueblos indígenas. 

On Jul 6, 2022, at 4:55 PM, Adrian Lakin <adrianlakin1@gmail.com> wrote:

Yesterday, Kelly Ormesher and I hiked up Mason Creek Trail. We had several wonderful encounters during the hike: a doe and her newborn fawn, a coyote pack howling, a Violet-green Swallow entering a nest, beautiful wildflowers, and lots of great birds.

 

We were specifically looking for sapsuckers and woodpeckers and when we arrived at a known Williamson's Sapsucker nest site area, we found an Aspen tree that looked like a bear had recently destroyed the nest hole. We weren't completely sure if this was the specific nest site as there were many Aspens with nest holes in that same area, but I later confirmed with Kathy Kay that it was the same tree where she had seen nestlings being fed last week.

 

We took some photos of the claw marks and destruction to the nest site. Kathy also suggested that they might be mountain lion claw marks based on the pix I sent last night.

We are wondering if anyone has experienced this before or has insight into what animal would have left these marks. I've added a link to the pictures below...

Pictures

Cheers,

Adrian Lakin,

Mead, CO

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