Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal kingdom—function permanently without it. This may be relevant in future ...

Here's some science trivia for you: unlike the inner retina in most animals (including us), birds' inner retinas function without oxygen. And now, researchers led by a team from Aarhus University in ...

A comprehensive analysis of the genes of aquatic birds has revealed a family tree dramatically different from traditional relationship groupings based on the birds' body structure, according to a ...

On winter nights, when temperatures fall far below freezing, small birds remain perched in open places that seem hostile to life. By morning, they are.