Date: 6/26/18 9:05 am From: 'Andrews Robert' via Colorado Birds <cobirds...> Subject: Re: [cobirds] Brewer's Sparrow, Guanella Pass, Clear Creek County
Thanks for the various comments concerning the Brewer’s Sparrows on Guanella Pass. We did not get recordings of the birds. Neither Michael or I have recording equipment, and even if we had, it was a bit breezy yesterday and that might have made it problematic anyway. The birds clearly seemed to be on territory, and for anyone who has the equipment and the inclination, it could be a good opportunity to record these high altitude Brewer’s Sparrows.
Yekepa, Liberia (currently in Highlands Ranch)
On Tuesday, June 26, 2018, 9:06:54 AM MDT, Nathan Pieplow <npieplow...> wrote:
Susan et al.,
Last I knew, there was no evidence that the Brewer's Sparrows occasionally found above treeline in Colorado belong to the "Timberline" subspecies. All available evidence suggested that these were typical Brewer's Sparrows that sometimes nest at high elevations (possibly for a second nesting attempt). As far as I am aware, the southern limit of breeding "Timberline" Brewer's Sparrows is in the Glacier National Park area of northern Montana.
That said, it's always a good idea to get a recording of interesting birds like this!
On Tue, Jun 26, 2018 at 7:29 AM, Susan Wise <burrowingowlsusan...> wrote:
This could be a Timberline which is a subspecies of the Brewer’s Sparrow. Did you get a recording?
Does anyone know the current status of research of the potential of separating the Timberline into a separate species? Any links would be appreciated.
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