Have you ever seen a fluffy bird in winter, like this black-capped chickadee?

From Two Rivers National Wildlife Refuge:

#USFWS #Bird

Have you ever seen a fluffy bird in winter, like this black-capped chickadee? Birds fluff their feathers to stay warm in cold weather: because their body heat warms the air between their feathers, birds fluff their feathers to make as many air pockets as possible, trapping in warm air. 

Photo: Black-capped chickadee by John Carr/USFWS 




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