Keel (bird anatomy) Keel (bird anatomy) A keel or carina (plural carinae) in bird anatomy is an extension of the sternum (breastbone) which runs axially along the midline of the sternum and extends outward, perpendicular to the plane of the ribs. The keel provides an anchor to which a bird's wing muscles attach, thereby providing adequate leverage for flight. Keels do not exist on all birds; in particular, some flightless birds lack a keel structure. Historically, the presence or absence of a pronounced keel structure was used as a broad classification of birds into two orders: Carinatae (from "carina", "keel"), having a pronounced
Society for Scientific Exploration X-Files or in the National Enquirer shows up first here. But what also shows up is a surprising attitude of skepticism." The society's magazine, the "Journal of Scientific Exploration", was established to provide a scientific forum for ufology, parapsychology and cryptozoology, having published research articles, essays, book reviews and letters on those and many other topics that are largely ignored in mainstream journals. The journal is currently edited by parapsychologist and philosopher Stephen E. Braude. The Spirituality and Psychiatry Special Interest Group of the Royal College of Psychiatrists says that the journal has reports about anomalies in science, particularly in