Learn what a yellow-headed blackbird looks like and where to find this bird. Also discover facts about their sounds, nests, diet and more.

Cormorants are mainly black with yellow-orange coloring around their faces and bills. Depending on the species, cormorants typically weigh between 1 and 11 pounds and have a wingspan of 2 to 3 feet.

Mr. Yellow, a cardinal with a rare genetic mutation spotted in central Alabama in 2018 and 2019, sits watch over two baby birds that are possibly his offspring. Jeremy Black Photography ...

When a black swallowtail caterpillar feels threatened, it may display a V-shaped defensive gland known as the osmeterium. To the human eye, the osmeterium would appear yellow.