What's in a blue jay feather? As it turns out, less color than you'd think. We asked an expert to explain why blue jay ...

After ruling out diet, scientists discover the secret behind blue feathers lies inside how the feathers are made. Gavriel Jecan / Corbis For decades, scientists have known how birds with yellow or ...

When is a blue bird not blue? The answer to this question is always. There actually is no such thing as a blue bird. To find out why, Smithsonian asked Scott Sillett, a wildlife biologist at the ...

Experts say it was a Northern Cardinal, but with some blue feathers instead of red. The cardinal was spotted Monday on the PixCams bird feeder camera in Murrysville, Pennsylvania.

While they don’t carry all the colors of old glory, here’s a selection of Pennsylvania birds that are notably red and white and blue.

The Controlled Plant and Noxious Weed Committee recently added 5 non-native plants to Pennsylvania’s noxious weed list. Designated as Class A noxious weeds, for which preventing new infestations ...

Scientists discovered that 37 out of 45 species of birds-of-paradise absorb UV or blue light and then emit light at lower frequencies.

For most of those, the color is actually in the feather itself. “If you see birds that are red, or orange or yellow those are pigment based in the feathers,” according to Harvey Webster, Chief ...

The ruffed grouse has been Pennsylvania's state bird since 1931. This brown, chicken-like bird gets its name from the black "ruffs" on the side of its neck.

Animal-rights activists in Pennsylvania are fighting to end pigeon shoots in the state. The tradition includes shooting at the birds after they're sprung from boxes into the air. Opponents call ...