In the past few decades, ornithologists have noticed some the birds' yellow feathers have mysteriously turned red. (See National Geographic's backyard bird identifier.) At first researchers ...

Hill said that if the bird has any red feathers on its body at all, then it’s not a yellow cardinal, as the mutation makes those birds incapable of having feathers that color. “There’s no ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The ...

These bright red birds are back and ready to haunt the forests of Alabama for the summer. Summer tanagers will hang around to ...

Smash wood from above. Why did I wait so long to look at this yellow bird? Why? It is one of the first ones you get - and way better than the blue or red bird. I really don't know. Oh, you don't ...

Now, a bird with the same genetic mutation -- one that makes the bird’s feathers appear bright yellow instead of red-- has been spotted in the Birmingham suburbs, about 15 miles away from the ...

"Our resident yellow ... red eyes. However, their most striking feature is their yellow crown consisting of a long plume. The ponytail, as well as the dark grey feathers on the bird's neck ...

In the 1300s, Spanish explorers discovered a small bird living in the islands off the western coasts of Portugal and Morocco, with dull green feathers but a sweet lyrical voice. The bird became ...