As anyone who has tried to hold a conversation in a noisy room knows, it is sometimes easier to rely on hand gestures than to shout over the din. White-throated dippers face a similar challenge along ...

Birds are the master vocalists of the animal kingdom. They can make a remarkable variety of sounds. But why is a barred owl more of a baritone, while a cedar waxwing is a soprano? And what influences ...

Ralph Venstreets/University of California, Davis A little over a year ago, Marcela Uhart was walking on the beach in Punta Delgada, Argentina. It was peak breeding session on this peninsula known for ...