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Four types of bird feet (right foot diagrams) Birds' feet are classified as anisodactyl, zygodactyl, heterodactyl, syndactyl or pamprodactyl. [32] Anisodactyl is the most common arrangement of digits in birds, with three toes forward and one back.
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.
In bird anatomy, the gape is the interior of the open mouth of a bird, and the gape flange is the region where the two mandibles join together at the base of the beak. [33] The width of the gape can be a factor in the choice of food. [34] The gape flange on this juvenile house sparrow is the yellowish region at the base of the beak.
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]
Birds do have a larynx, but unlike in mammals, it does not vocalize. The position of the syrinx, structure and musculature varies widely across bird groups. In some groups the syrinx covers the lower end of the trachea and the upper parts of the bronchi in which case the syrinx is said to be tracheobronchial, the most frequent form and the one ...
In a bird's digestive system, the crop is an expanded, muscular pouch near the gullet or throat. It is a part of the digestive tract, essentially an enlarged part of the esophagus. As with most other organisms that have a crop, it is used to temporarily store food. Not all bird species have one.
Birds with teeth were common during the time of the dinosaurs, but a newly discovered species is changing the way scientists understand avian evolution. ... ‘Strange bird’ specimen might have ...
Birds feature in the flag designs of 17 countries and numerous subnational entities and territories. [328] Birds are used by nations to symbolise a country's identity and heritage, with 91 countries officially recognising a national bird. Birds of prey are highly represented, though some nations have chosen other species of birds with parrots ...