Thursday 23 June 2022

Re: [cobirds] Chihuahuan Raven

Curt, thank you for providing this educational opportunity for Colorado birders. And thanks for the great photo and audio documentation. I believe this to be Common Raven based on heavy bill, and the length of the rictal bristles over the culmen (not more than half the length of the bill.) Common Raven has pale gray at base of neck feathers, similar to the white neck of Chihuahuan Raven, ooften a point of confusion. Voice of Common Raven is variable whereas Chihuahuan Raven is not. To my ear, the call of Chihuahuan reminds me of a parrot. Taken all together, This would be a Common Raven (albeit a confusing one).

Nick Komar
Fort Collins CO
> On Jun 23, 2022, at 9:49 AM, Curt Frankenfeld <curtis.frankenfeld@gmail.com> wrote:
> I believe this to be a Chihuahuan Raven from an outing yesterday. The photo is from Douglas County which has few sightings of Chihuahuan Ravens in ebird so I want to make sure of my ID. The bird was about 50 yards out and the photo is heavily cropped. The bird was vocalizing and giving many different calls. It seemed to be answered by another bird that was more distant and I was not able to find it. This went on for at least 10 minutes and I've attached a short cell phone (Merlin) recording of this bird's contribution to the interaction (beware, it is very low volume).
>
> I intend to go back to this location today to see if I can re-locate this bird and, hopefully, the other party in this conversation.
>
> Curt
>
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