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You’re at the park wearing a heavy winter coat, a beanie, gloves, a scarf, and warm boots—and you’re still numb and shivering from the cold. Then you notice a robin hopping from branch to branch.

Birds across the Americas are getting smaller and longer-winged as the world warms, and the smallest-bodied species are changing the fastest. Birds across the Americas are getting smaller and ...

But all birds have high body temperatures. The chickadee’s best trick is to go into torpor every night, a brief form of hibernation that reduces their body temperature by 20 degrees, saving energy. In ...

Researchers spent five years studying the gut microbiomes of Northern cardinals, a common backyard songbird known for its vivid red plumage. Their study explores how microbiome diversity impacts the ...

Marc Trevor Freeman receives funding from National Research Foundation. Andrew McKechnie receives funding from the National Research Foundation. He holds the South African Research Chair in ...

Birds across the Americas are getting smaller and longer-winged as the world warms, and the smallest-bodied species are changing the fastest. That's the main finding of a new University of ...