Actually this is intergrade Slate-colored x Red. The red on the upperparts is derived from Red Fox Sparrow and the black streaks on the under parts are derived from slate colored fox sparrow. The two sub species interbreed in British Columbia. Intergrades are fairly common among the Fox Sparrows that occur in winter in Colorado. Nice job documenting this rare bird.
Nick Komar
Fort Collins CO
On Jan 9, 2022, at 9:14 PM, Valentina Roumi <valentinaroumi@gmail.com> wrote:
Apologies for confusion caused by previous email regarding Fox Sparrow.It is Slate-colored. Seen by several birders today around noon at Bear Creek Lake Park--Boat Launch Area.--On Sun, Jan 9, 2022 at 5:23 PM Charlie Chase <charlesachase3@gmail.com> wrote:Any particular marina boat ramp?CharlieDenverOn Sun, Jan 9, 2022 at 4:33 PM Valentina Roumi <valentinaroumi@gmail.com> wrote:Sooty Fox Sparrow by marina boat ramp. Feeding in mixed flock with Tree and Song Sparrows.--
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