Unlike birds whose plumage is mostly blue, the green coloring of a green bird’s feathers is the result of pigment, not a ...

Animals range in size, shape, and appearance. Some possess drab, plain-looking feathers, scales, or skin, while others sport ...

for birds on different branchlets in the family tree, the chest and belly. Often the sexes differed. Despite variety in body parts, the fluorescence appeared generally green or greenish yellow ...

Often seen as a lemon-colored blur among leafy treetops, the American yellow warbler is challenging to view with binoculars or capture with a camera. Patience and a bit of luck make it worth the ...

Scientists estimate the male northern cardinal’s genetic mutation that makes it yellow also makes it a 1-in-10 million bird. The abnormally colored songbird is now a part of the couple’s daily ...