23 October 2018 Sometimes crows can’t help it. They cause trouble at home and abroad. Crows At Home: Last week Pittsburgh’s growing winter crow population — composed of American crows (Corvus brachyrhynchos) and a few fish crows (Corvus ossifragus) — caused trouble at the University of Pittsburgh. Andrew Mumma reported that the population roosting on … Continue reading Crows Causing Trouble?