CROW REVENGE

Apr 28, 2026

Friends may come and go, but enemies accumulate. And if those enemies are crows, you are in deep doo-doo. They have multigenerational vendettas. So try to be nice …

This short video from University of Washington researchers shows why. It’s based on a now-famous field experiment in which scientists wearing distinctive masks captured and released wild crows. The birds didn’t forget. Years later, they still scolded and mobbed the “dangerous” face — and, more impressively, other crows who had never been captured joined in, having learned the grudge secondhand.