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 Flight feathers are the long, stiff,

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Kig 'Yar
Kig 'Yar


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PostSubject: Flight feathers are the long, stiff,   Mon Mar 07, 2011 12:38 am

Flight feathers are the long, stiff, asymmetrically shaped, but symmetrically paired feathers on the wings or tail of a bird; those on the wings are called remiges (singular remex) while those on the tail are called rectrices (singular rectrix). Their primary function is to aid in the generation of both thrust and lift, thereby enabling flight. The flight feathers of some birds have evolved to perform additional functions, generally associated with territorial displays, courtship rituals or feeding methods. In some species, these feathers have developed into long showy plumes used in visual courtship displays, while in others they create a sound during display flights. Tiny serrations on the leading edge of their remiges help owls to fly silently (and therefore hunt more successfully), while the extra-stiff rectrices of woodpeckers help them to brace against tree trunks as they hammer. Even flightless birds still retain flight feathers, though sometimes in radically modified forms.

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Unngoy
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PostSubject: Re: Flight feathers are the long, stiff,   Mon Mar 07, 2011 4:33 am

The wingspan (or just span) of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about 60 metres (197 ft); and a Wandering Albatross (Diomedea exulans) caught in 1965 had a wingspan of 3.63 metres (11 ft 11 in), the official record for a living bird.

The term wingspan, more technically extent, is also used for other winged animals such as pterosaurs, bats, insects, etc, and other winged aircraft such as ornithopters.





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