🐦Birds in Winter🐦All cold-climate birds pack on body weight in the late summer and fall in anticipation of the long, cold winter, but feathers also play an important role. All birds stay warm by trapping pockets of air around their bodies. The secret to maintaining these layers of air lies in having clean, dry and flexible feathers. (This mourning dove is being kept warm in 7° weather by squatting down in a puffed up manner.)
Birds will also roost in thick cover, tree cavities or manmade nesting or roosting cavities to ward off cold. Chipping sparrows, northern cardinals, blue jays and mourning doves, for example, will roost in dense conifers and other thick cover on frigid nights.
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