An analysis of 140,000 vocalizations from 77% of bird species showed that beak size and geography play a big role in the way ...

If budgies make clicking noises with their beaks, it can mean they're acting defensive and territorial, and they want a bird or animal to back away. Brown-headed Cowbirds are a widespread brood ...

The planet’s birds make a lot of different sounds communicating a wide variety of messages. The petite Black-capped chickadee emits a high noise that tells predators to scram. Hungry Pileated ...