short-eared owl, asio flammeus, roost in winter trees, waltham abbey, essex, uk

abbey animal asio barn beak bird birds conservation eared essex eye eyes feathers flammeus flight gunpowder habitat hunter hunting iceland isolated lee long migration migratory nature nocturnal ornithology outdoors owl owls park plumage predator prey raptor roost russia scandinavia short shorteared valley waltham watching wild wildlife wing winter