Total length in the tawny owl ranges from . They increase evening body mass in response to tawny owl calls. Much more dangerous than larger "Strix" species to the tawny owl is the Eurasian eagle-owl. Little evidence has been found of tawny owl predation on reptiles. Owl had also been known as Tawny Owl in the books. The flight of the tawny owl is relatively heavy and slow, particularly at takeoff. The tawny owl is an opportunistic and generalized predator. Like the tawny owl, the barred owl usually hunts from a perch. This contrasts strongly with the tawny owl, which almost always fully nocturnal. The tawny owl is non-migratory and highly territorial. The tawny owl mostly focuses on fairly small-sized prey. The tawny owl is a medium-sized species of owl. The tawny owl takes an extremely wide range of prey species. The tawny owl is a considerable predator itself of smaller owls. Other bird life within the city includes peregrine falcon, tawny owl and common kingfisher.