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 ...

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 middle ...

Feb 10, 2018 Feb 10, 2018 Updated Dec 28, 2022 One common backyard bird that may be taken for granted also has romantic attributes worthy of Valentine’s Day. In the brown bleakness of mid-winter, the ...

All air-breathing vertebrates have a larynx—a structure of muscles and folds that protects the trachea and, in many animals, vibrates and modulates to produce a stunning array of sounds. But birds, ...

The more you know about bird song, the more you’re apt to be fascinated by this well-known ritual of spring. We all know spring is a prime time to hear birds. These bird sounds can range from a ...

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 ...