Long-eared Owl

Strictly nocturnal; rarely seen foraging at dusk and dawn. Found in areas with a mix of dense cover for roosting, such as brushy thickets or conifer groves, and open spaces for hunting. Generally uncommon to rare and seldom-seen, but can gather in communal winter roosts with dozens of individuals (if you're lucky enough to find a roost, do not disturb the birds). Compare with Short-eared Owl. Typical vocalization is a single low “woop” repeated every few seconds; also gives a wide range of maniacal catlike screeches and doglike barks.