Two species of birds in Costa Rica build nests in trees defended by ants. Ants that encounter the horsehair fungus in the nests develop odd behaviors.

Researchers discovered a link between body temperature and plant-based diets that could reshape scientists' understanding of how animal diets evolve.

Hundreds of hours of recordings suggest that the apes can generate meaning by stringing sounds together in pairs. But some scholars are skeptical.

Humpback whales’ oversized flippers give them the lift and agility needed for bubble-net feeding — a foraging skill no other whale can match.

We document the first known hybridization event between the Green Jay (Cyanocorax yncas) and Blue Jay (Cyanocitta cristata), two distantly related species whose ranges now overlap in Texas due to cli...

When a predator like a lion walks through the grasslands, it makes its presence known by roaring, which can be heard miles away. Since the lion is at the top of the food chain, it doesn’t particularly require privacy. But for animals like deer, making loud…

Non-native wall lizards living in Cincinnati, Ohio, have thrived against the odds thanks to an ability to expand their population more quickly than any inbreeding-amplified harmful genes could weaken their chances for survival, new research suggests. An estimated…

Study finds activity is not harmful or caused by stress of captivity – and is in fact more common in wild birds

In most vertebrates, social play among peers is considered essential for behavioral
development. Yet in solitary species bearing single offspring, ...