The male is all black with a bright orange beak and eye ring. The female is all dark brown. It is a ground feeding bird often seen rooting up leaf litter looking for grubs and worms. The nest is ...

A shared shape rule, the power cascade, governs most bird beak growth. It links modern birds with extinct dinosaurs.

A bird once declared extinct in the wild has just laid eggs in Hawaii. The sihek vanished by the 1980s after the accidental ...

While many birds have basic brown or black bills ... which is nicknamed “the clown of the sea,” has a stunning beak that turns bright orange, yellow, and blue during the breeding season.