Barn owls facial disk
The Barn Owl, Tyto alba, has a prominent facial disc. In ornithology, the facial disc is the concave collection of feathers on the face of some.
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31 Dec This is the shape and configuration I'm used to seeing – the classic “heart shape” of the facial disc (ruff) of the Barn Owl. Notice that there's an.
Description:Whether or not the above theory applies to the owl, it can suggest useful research strategies. It consisted of square masonite plates, 10 centimeters x 10 centimeters and 20 centimeters x 20 centimeters, laid out like a chessboard covering the part of the floor where the owls were trained to land. The opening varies from a small, round aperture to an oblong slit with a large operculum. Important Tip To Remember: Causes are diverse, all fed by human fear: Owls do not have a structure homologous to the mammalian pinna, but some of them have a fold of skin extending from the forehead above the eye and along the orbit behind the ear to the base of the lower mandible.