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Bird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight.Birds have a light skeletal system and light but powerful musculature which, along with circulatory and respiratory systems capable of very high metabolic rates and oxygen supply, permit the bird to fly.
[2] [4] The first digit, called the hallux, is homologous to the human big toe. [7] [10] The claws are located on the extreme phalanx of each toe. [4] They consist of a horny keratinous podotheca, or sheath, [2] and are not part of the skeleton. The bird foot also contains one or two metatarsals not fused in the tarsometatarsus. [8]
The furcula (Latin for "little fork"; pl.: furculae) [a] or wishbone is a forked bone found in most birds and some species of non-avian dinosaurs, and is formed by the fusion of the two clavicles. [1] In birds, its primary function is in the strengthening of the thoracic skeleton to withstand the rigors of flight.
The skeleton of a bird wing. Places of attachment of various groups of flight feathers are indicated. The mute swan with outstretched wings Wing of the white-tailed eagle. Bird wings are a paired forelimb in birds. The wings give the birds the ability to fly, creating lift. Terrestrial flightless birds have reduced wings or none at all (for ...
This stylised bird skeleton highlights the keel bone. 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 birds formerly bred on Ascension Island itself, but the colonies were exterminated by feral cats introduced in 1815. The birds continued to breed on a rocky outcrop just off the shore of the island. A program conducted between 2002 and 2004 eradicated the feral cats [67] and a few birds have returned to nest on the island. [68] [69]
The jugal bone is located on either side of the skull in the circumorbital region. It is the origin of several masticatory muscles in the skull. [1] The jugal and lacrimal bones are the only two remaining from the ancestral circumorbital series: the prefrontal, postfrontal, postorbital, jugal, and lacrimal bones.
WSB-TV (channel 2) is a television station in Atlanta, Georgia, United States, affiliated with ABC.It is the flagship television property of locally based Cox Media Group, which has owned the station since its inception, and is sister to radio stations WSB (750 AM), WSBB-FM (95.5), WSRV (97.1 FM), WSB-FM (98.5) and WALR-FM (104.1).