The Grants found that the offspring of the birds that survived the 1977 drought tended to be larger, with bigger beaks. So the adaptation to a changed environment led to a larger-beaked finch ...

Bird beaks come in all shapes and sizes, and through observing those differences we can learn a lot about them. Our education ...

The uses of birds beak and their function are explained by Feeder 2, and through this, many different adaptations are illustrated by the users, indicating the usefulness of the feeder. As a bird ...

The video could be used as starter on a lesson on evolution, adaptation and natural selection ... body size but the most obvious differences between the birds are the size and shape of their beaks, ...

A newly discovered fossil provides strong evidence that modern birds lived alongside dinosaurs. The 69-million-year-old skull ...

But why is a barred owl more of a baritone, while a cedar waxwing is a soprano? And what influences a bird’s vocal range, and the kinds of sounds it can make? Beak size? Body size? Geography? To ...

Get out your binoculars and really watch. The birds are “meeting the season beak-on,” Mr. Dunne writes, and take note: A bird’s bill is not insulated. Nor are its legs and feet. So all those ...