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
This Is What the Truth Feels Like It was the venue for her first live performance with her band No Doubt opening for Ziggy Marley in 1990. "This Is What the Truth Feels Like" received generally favorable reviews from contemporary music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream publications, the album received an average score of 62, based on 16 reviews. Leah Greenblatt of "Entertainment Weekly" stated that Stefani's material "feels truer—and sounds stronger—than it has in years". Mikael Wood of the "Los Angeles Times" was very positive in his review, highlighting that "[h]er singing—and, more important, what her