BLOOMINGTON, Ind. -- When it comes to making noise, both parrots and humans rely on extremely specialized vibrating organs in their throats. Now scientists at Indiana University and Leiden University ...

In a recent finding that throws new light on mechanisms of animal vocal communication, researchers have shown that parrots can modify the sound of their vocalizations by articulating their tongue.

Parrots are highly intelligent, social creatures. In the wild, they spend most of their time interacting with other parrots—preening one another, foraging together and roosting in groups at night.