Two cats that belonged to Michigan dairy workers exposed to bird flu died after being infected with the virus last year.

Researchers studying birds and the food they eat are now finding much larger volumes of the toxic PFAS chemicals than before.

Large birds—our closest relations to dinosaurs—are capable of technical innovation, by solving a physical task to gain access to food. This is the first time scientists have been able to show that ...

Birds-of-paradise are even colorful in the dark, with feathers and body parts that glow a brilliant yellow-green under ...

Does a duck always look like a duck and quack like a duck? Sixty-six million years ago, at the end of the Cretaceous Period, ...