This Kestrel didn't seem to mind the cold as it perched in late Jan. 2016 at Desmond Road near Thornton, CA. The wind seemed to soften and fade the pastel-like plumage and made focusing somewhat challenging at times.

Nikon D810
Nikkor 200-500mm f5.6
1/1600
f5.6, +1.3 EV
ISO 320