Search results
Results from the WOW.Com Content Network
A keel or carina (pl.: 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.
Traditionally, Carinatae were defined as all birds whose sternum (breast bone) has a keel (carina). The keel is a strong median ridge running down the length of the sternum. This is an important area for the attachment of flight muscles. Thus, all flying birds have a pronounced keel. Ratites, all of which are flightless, lack a strong keel.
External anatomy of a typical bird: 1 Beak, 2 Head, 3 Iris, 4 Pupil, 5 Mantle, 6 Lesser coverts, 7 Scapulars, 8 Coverts, 9 Tertials, 10 Rump, 11 Primaries, 12 Vent, 13 Thigh, 14 Tibio-tarsal articulation, 15 Tarsus, 16 Feet, 17 Tibia, 18 Belly, 19 Flanks, 20 Breast, 21 Throat, 22 Wattle, 23 Eyestripe Topography of a typical passerine.
Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; Appearance. move to sidebar hide. Help ... Keel (bird anatomy) L. Lore ...
English: This is an oversimplified cross sectional image of a dome and keel structure not to scale. It is a structure consisting of tonalite-trondhjemite-granodiorite (TTG) diapers shown in orange, with mafic and ultramafic layers, in green, wrapped around them (specifically komatiites and basalts).
Vocal Bird anatomy: Birds produce sounds through the air that passes through the Syrinx, which is shown close up in the bottom right. In order for birds to produce sound, they use an organ located above the lungs called the syrinx , which is composed of tracheal rings, syringeal muscles, Tympaniform membrane, and internal bony structures that ...
Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia. [49] bird strike The impact of a bird or birds with an airplane in flight. [50] body down The layer of small, fluffy down feathers that lie underneath the outer contour feathers on a bird's body. [51]
The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada. It is written and illustrated by ornithologist David Allen Sibley . The book provides details on 810 species of birds, with information about identification, life history, vocalizations, and geographic distribution.