Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated, paleontological discoveries and developmental biology studies ...

A new discovery in southern China begs the understanding of evolutionary link between birds and dinosaurs. The fossilized remains of around 72-million-year-old dinosaur embryo, which is nicknamed Baby ...

EGG INCUBATION : ITS EFFECTS ON EMBRYONIC DEVELOPMENT IN BIRDS AND REPTILES EDITED BY D CHARLES DEEMING AND MARK WJ FERGUSON ...

Nesting Cycle Chipping Sparrow nest by Red Wing Birding More than 700 bird species breed in North America, and the variations ...