Typically, females appear less colorful than males; this adaptation helps protect females from predators. Such an adaptation ...

yellow belly and purple breast. Black is the most common facial color, found in 75% of Gouldian finches, with red-faced birds making up most of the remaining 25% and yellow-faced birds occurring ...

In sunlight, its black feathers shine with hints of purple and green, making it a sparkling sight in flocks. This bird of paradise has shimmering black feathers and a sickle-shaped beak ...

Researchers described biofluorescence in 37 of the 45 known species of birds-of-paradise, found only in remote tropical forests ... something called an ultra-black feather that really sucks ...