13 Scientific Reasons Why Crows And Ravens Are The Best Birds, No Question - ScienceAlert

13 Scientific Reasons Why Crows And Ravens Are The Best Birds, No Question ScienceAlert In a test on New Caledonian crows, crows were placed in an enclosure wherein a stick would emerge from a hide. They used two scenarios: in the first, a human was observed entering the hide before the stick moved, and leaving after. In the second, the ... and more »

from The Idiot Test - Google News http://ift.tt/2qdTCf9