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DISTRIBUTION OF THE SPECIES
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11 February abundant activity adult aggressive agonistic American Kestrel appears Asio flammeus Barn Owl behavior bouts breeding territories captive owl carrying prey cast a pellet cent chase communal roost courtship Craighead CTl rH Distraction display early eggs feathers February feeding feet female field fledging flew flight flushed flying food habits food supply frequently grams ground habitat hovering indicate leave the nest located male Manitoba Marsh Hawks mice Microtus migration minutes Niagara roost number of owls numbers observed Otus asio owlet owls roosted pair pennsylvanicus perched period Peromyscus maniculatus Pitelka Point Barrow population predator preening prior probably raptors rH CM rH rH Ring-billed Gulls rodents roost area Rough-legged Hawks Royal Ontario Museum season seen Short-eared Owl skirmishes small mammal sometimes species Strigidae Strigiformes stubble suggested Table temperature trap-nights usually voles vulnerability wind velocity wing-beat Wing-clapping wing-loading wings winter assemblage winter territory young