In good light, black on wings and tail shine with iridescent green, blue ... birds in the south average smaller and tend to show bare dark grayish skin below eye (similar in shape to the yellow ...

The blue-billed curassow is the world's most threatened species of cracid, a family of beautiful crested game birds found primarily in Latin America. This large, mainly black bird is the only curassow ...

From fiery red to electric blue, birds in the UK are a riot of colour ... Male siskins are a bright shade of yellow with a few bold, black accents. Siskins, Carduelis spinus, are seen across the UK, ...

Polytypic (6 ssp.). Length 5.3". Spring male: crown and back blue-gray streaked with black. Yellow crown patch, distinct rump patch, and patches at sides of breast. White or yellow throat.