Paul Hobson / Long-eared owl (Asio otus) on pine tree stump, North Yorkshire, captive, UK

Dave Bevan / Long eared owl (Asio otus) perched on fence post, head cocked on one side, Wales, UK, captive

Dave Bevan / Long eared owl (Asio otus) perched on post, shaking wings in rain, Wales, UK, captive

Dave Bevan / Long eared owl (Asio otus) peering round trunk of larch tree, Wales, UK, captive

David Kjaer / Long eared owl {Asio otus} UK

Dietmar Nill / Long eared owl (Asio otus) in flight with snow. Germany, Europe

Dietmar Nill / Long eared owl chick (Asio otus) showing aggression. Germany, Europe

Oscar Dewhurst / Long-eared Owl (Asio otus) hunting over grassland. Durham, UK. May

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May. Cropped

Marie Read / Eastern screech-owl (Megascops asio) grey morph, roosting in tree cavity in winter, Lansing, New York, USA, January.