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
What More Can I Give and the International Child Art Foundation. The charities support arts programs to eliminate racism, increase education and connect children throughout the world, respectively. The download project had been set up by Jackson with the American media company Clear Channel Communications.<ref name="Michael Jackson's Troubled 9/11 Single Now A Charity Download"></ref> Footnotes Bibliography What More Can I Give "What More Can I Give" (also "Todo Para Ti" in Spanish) is a song written by American singer Michael Jackson and recorded in 2001 by Jackson and a supergroup of singers following the September 11 attacks. The inspiration for the song had initially come