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A number of animals are capable of aerial locomotion, either by powered flight or by gliding. This trait has appeared by evolution many times, without any single common ancestor. Flight has evolved at least four times in separate animals: insects, pterosaurs, birds, and bats. Gliding has evolved on many more occasions.
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 example, moa ). In aquatic flightless birds ( penguins ), wings can serve as flippers. [ 1]
Sumi – An animal guardian spirit with the wings of a Thunderbird and the legs of an American black bear who is the mascot of the 2010 Winter Paralympics. Toodee – A blue creature with the face, ears and whiskers of a cat , the body and skin of a dinosaur , and the scales and spikes of a dragon .
Calais and Zetes, the sons of the North Wind Boreas. [ 3] Chareng, also called Uchek Langmeidong, a mythical creature from Meitei mythology that is part-human and part- hornbill, having an avian body and a human head. The Ekek from Philippine mythology is depicted as a humanoid with bird wings and a beak. Eos is often depicted as winged in art.
Flightless birds have, through evolution, lost the ability to fly. [ 1] There are over 60 extant species, [ 2] including the well-known ratites ( ostriches, emus, cassowaries, rheas, and kiwis) and penguins. The smallest flightless bird is the Inaccessible Island rail (length 12.5 cm, weight 34.7 g). The largest (both heaviest and tallest ...
A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of dragonflies are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterised by a pair of large ...
The obverse of the flag of Oregon, the state's flag. The U.S. state of Oregon has 27 official emblems, as designated by the Oregon State Legislature. Most of the symbols are listed in Title 19, Chapter 186 of the Oregon Revised Statutes (2011 edition). [ 1] Oregon's first symbol was the motto Alis Volat Propriis, written and translated in 1854.
The mechanics of an avian's wings involve a complex interworking of forces, particularly at the shoulder where most of the wings' motions take place. These functions depend on a precise balance of forces from the muscles, ligaments, and articular cartilages as well as inertial, gravitational, and aerodynamic loads on the wing. [4]