Smith Says Trump Knowingly Withheld Classified Documents This simple fitness test might predict how long you’ll live World ...

The mystery bird was observed following a flock of blue jays, making similar calls. But it also produced the clicks and rattling vocalizations of a green jay.(Brian Stokes/University of Texas via CNN ...

Host Peter O'Dowd talks with Brian Stokes, graduate student in ecology, evolution and behavior at the University of Texas at ...

There was a time when Blue and Green Jays were distinct entities. A resident of San Antonio, Texas, recently photographed a unique hybrid bird, the surprising offspring of a Green Jay and Blue Jay.

A male blue jay on the left, a female green jay on the right and a hybrid offspring of the two species in the center. Travis Maher / Cornell Lab of Ornithology / Macaulay Library (left); Brian Stokes ...

What do you get when you cross a blue jay with a green jay? That’s not the start of a joke, but the subject of a new study that aims to describe a hybrid bird never encountered before in the wild. The ...