ANIMALS - How similar are the gestures of apes and human infants? More than you might suspect

Psychologists who analyzed video of a female chimpanzee, a female bonobo and a female human infant in a study to compare different types of gestures at comparable stages of communicative development found remarkable similarities among the three species.

http://medicalxpress.com/news/2013-06-similar-gestures-apes-human-infa