Crows can memorize human faces
Wildlife biologists figured this out by conducting a simple experiment using rubber masks. A "caveman" mask, for example, designated a "dangerous" face while a mask of former Vice President ****** Cheney was "neutral." Researchers in the dangerous mask trapped and banded individual American crows and then released them. While they were careful not to harm the birds during trapping, "it's still a scary experience for the bird," Swift says.
To see whether the crows remembered the dangerous face, researchers returned to the area and walked around wearing the different masks. And when the birds saw the dangerous face, Swift says, "they would alarm-call, they would dive-bomb that person." The neutral face was mostly ignored.
The gender or body type of whoever was wearing the dangerous mask didn't much matter — the crows seemed to key in on the face. Researchers even flipped the mask upside down to see if the crows could still recognize it. "For a brief moment, the crows seemed a little confused, and then they would just tilt their head upside down and then they'd start an alarm-calling," Swift says.
Even crows that hadn't been tagged or banded scolded and dive-bombed the wearer of the dangerous mask. Swift says this suggests the crows "were actually learning from their peers that this particular person is dangerous."
And if you need another reason to be nice to crows, they can also remember faces for years.
https://www.npr.org/2020/10/23/927088859/crows-are-they-scary-or-just-super-smart Edited by user
4 years ago |
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