Little birds fluff up:
Birds fluff up while working:
Yellow-Bellied Sapsucker at the feeders in Evodia, Central Park
Birds fluff up in company:
that dove in the middle has had a hard life, but at least he has friends
Even really big birds fluff up:
Red-Tailed hawk, hanging out over the Evodia feeders, Central Park.
Hope you're all keeping warm.