Both male and female birds use traits like plumage brightness to size each other up, but a new study on Northern Cardinals shows that the meanings of female birds’ markings may vary from one ...

In a backyard in Erie, Pa., an unusual cardinal has appeared, displaying both male and female traits. Scientists say it may be a so-called gynandromorph. By Karen Weintraub A bird hopping outside ...

Summer Tanager. Summer tanagers are all red birds, without the black wings and tail of the scarlet tanager, and no black eye mask like cardinals. Look for them in southern states. They are not as ...

Male cardinals are red. Female cardinals are tan. The odd bird that's been roosting outside John and Shirley Caldwell's kitchen in Erie, Pennsylvania, is an even split of both. Divided down the ...

Gynandromorphs, or "half-siders," exist in many bird, crustacean and butterfly species. According to Hooper, cardinal half-siders are especially easy to spot because male and female birds of the ...

Both male and female birds use traits like plumage brightness to size each other up, but a new study on Northern Cardinals in The Auk: Ornithological Advances shows that the meanings of female ...

The bird exhibited the typical bright red color of a male cardinal on the left half of its body, and the dull brownish-gray appearance of a female cardinal on the right half. We observed the bird ...

The Northern Cardinal is actually the state bird of seven states. Here’s how to attract them to your yard, and why they fight their own reflection.