Tethered Raptor Displaces Roosting Cormorants

Double-crested Cormorant (Phalacrocmax auritus) numbers in the Great Lakes of North America have increased dramatically during the past three decades. Current concerns include negative effects of cormorants on aquatic food webs, destruction of nesting habitat and competition with other avian species and odors due to feces. Control of cormorant nesting and roosting has been variably successful and sometimes involves lethal force and/or loud …