7 January 2021
Huge flocks of crows roost in Portland, Oregon in the winter just as they do Pittsburgh. By 2017 the city realized that the crows’ huge sanitation problem could not be solved with cleanup crews and pyrotechnics so they turned to a team of falconers.
This 9-minute video from Oregon Public Broadcasting, published in November 2018, shows how trained Harris hawks — which normally operate during the day — move the crows at night. Awesome!
(screenshot from OPB video; click on the caption to see the original)