In Rector, Pa., researchers have spotted one strange bird. This rose-breasted grosbeak has a pink breast spot and a pink “wing pit” and black feathers on its right wing — telltale shades of males. But ...

Earlier this year, a group of researchers published a paper on the remarkable phenomenon of sex reversal in several ...

Researchers have found that how well a male songbird learns his song affects the female's mating response – the first evidence that female birds use song-learning ability as an indicator of male ...

Among birds, females often rule the roost. Not only do females frequently take control in the selection of a mate and over nesting activities, but several female birds also are larger and more ...

Female birds sing. That is one of the revelations of our 2020 study on one of the most abundant, widespread, well-studied bird species in the world: the barn swallow. Despite the well over 1,000 ...

The backyard comes alive as a male Northern cardinal belts out his exuberant, whistle-y song — but wait, how do we know the singer is a male? Unless you see an all-red bird pushing out the sounds, you ...