Birds adapt their sounds based on habitat, latitude, and size, with smaller birds using wide frequency ranges to ensure survival.

♪ ♪ (whirring) (water sloshing) (low whistle) (whistling) (bird hooting) PEDRO RUIZ (speaking Ashéninka language): (leaves rustling) (bird hooting) (bird hooting ...

A brown and white bird with two black bands across its chest, the killdeer is known for its shrill whistle, a two-syllable ...

Warmer winters mean the ducks have decided to linger in New Orleans rather than flying farther South. But there's a lot we don't know about them yet, scientists say.