https://www.mercurynews.com/2022/01/25/green-laser-seems-to-be-scaring-off-sunnyvales-crows-for-now/

SUNNYVALE —  As the sun began to set Monday, about the only crow that could be spotted in Plaza del Sol was fake — an effigy of a dead one suspended upside down from a tree’s leafless branch.

It was an eerie contrast to the scene that has played out there evening after evening in recent years, when murders of cawing crows would suddenly blot out the sky like a black cloud and swoop all over downtown, roosting in trees and littering city sidewalks and benches with their feathers and poop.