When push comes to shove, what is a fight?

Biologists often study animal sociality by collecting observations about several types of behavioral interactions. These interactions can be things like severe fights, minor fights, cooperative food sharing, or grooming each ...

Birds share food with less fortunate conspecifics

People aren't the only ones who show sympathy. Birds also seem to care about the fate of conspecifics. They notice how much food the others already have and then share theirs with individuals that were not given any. "They ...

Study shows how a single gene drives aggression in wild songbird

A new study shows how differentiation of a single gene changes behavior in a wild songbird, determining whether the white-throated sparrow displays more, or less, aggression. The Proceedings of the National Academy of Sciences ...

American robins now migrate 12 days earlier than in 1994

Every spring, American robins migrate north from all over the U.S. and Mexico, flying up to 250 miles a day to reach their breeding grounds in Canada and Alaska. There, they spend the short summer in a mad rush to find a ...

The impact of human-caused noise pollution on birds

Anthropogenic noise pollution (ANP) is a globally invasive phenomenon impacting natural systems, but most research has occurred at local scales with few species. Researchers in this study investigated continental-scale breeding ...

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