Make Me Smarter #23: Crows can recognize individual human faces and hold grudges.
It’s probably best not to get on a crow’s bad side. According to one 2008 study by wildlife researchers at the University of Washington – plus tons of anecdotal evidence from wildlife biologists – the highly intelligent birds are capable of remembering individual human faces, even if those who have wronged them wear a disguise. So how do crows show their distaste? They scream. “The birds were really raucous, screaming persistently,” one volunteer in the crow study told The New York Times. “And it was clear they weren’t upset about something in general. They were upset with me.” Sounds intense!
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