Before learning to speak, human babies go through a vocal stage known as babbling, which is a well documented part of the vocal language acquisition process. Basically, babbling is how an animal ...

Source: Barloventomagico, via Flickr. Distributed under a CC BY-NC-ND 2.0 license. In a new study, researchers report that baby parrots in the wild quietly babble to themselves in their nests. The ...