corvids

In the new study, Clayton and her Cambridge graduate student James Thom decided to test the stress hypothesis. First, they
HuffPost Senior Science Correspondent Cara Santa Maria speaks with John Marzluff about his research into crow intelligence and memory.
Anyone who's ever watched crows or jays in their backyard has undoubtedly seen evidence of these birds' intelligence, whether stashing food for a later date or teaming up to mob and drive away hawks.
In many ways, Ravens have similar cognitive capacities to some primates. For instance, Ravens invent tools to achieve specific tasks, such as using sticks to scoop out ants from nests within trees.