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  2. Bird vision - Wikipedia

    en.wikipedia.org/wiki/Bird_vision

    Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". [1] Birds are theropods, [2] [3] and the avian eye resembles that of other sauropsids, with ciliary muscles that can change the shape of the lens rapidly and to a greater extent than in ...

  3. Portal:Birds - Wikipedia

    en.wikipedia.org/wiki/Portal:Birds

    Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". Birds are theropods, and the avian eye resembles that of other sauropsids, with ciliary muscles that can change the shape of the lens rapidly and to a greater extent than in the mammals ...

  4. Bird wing - Wikipedia

    en.wikipedia.org/wiki/Bird_wing

    These wings are favored by larger species of inland birds, such as eagles, vultures, pelicans, and storks. The slots at the end of the wings, between the primaries, reduce the induced drag and wingtip vortices by "capturing" the energy in air flowing from the lower to upper wing surface at the tips, [ 6 ] whilst the shorter size of the wings ...

  5. White-eyed buzzard - Wikipedia

    en.wikipedia.org/wiki/White-eyed_buzzard

    In flight, the narrow wings appear rounded with black tips to the feathers and the wing lining appears dark. The upper wing in flight shows a pale bar over the brown. The rufous tail is barred with a darker subterminal band. Young birds have the iris brownish and the forehead is whitish and a broad supercilium may be present. [2]

  6. Bird - Wikipedia

    en.wikipedia.org/wiki/Bird

    Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs , gave birds the ability to fly, although further evolution has led to the loss of flight in some birds , including ratites , penguins , and diverse endemic island species.

  7. Great potoo - Wikipedia

    en.wikipedia.org/wiki/Great_potoo

    Breeding has been recorded as typically February to August, but depending on the portion of this bird's range breeding birds can be met with almost year-round. [11] The nest is a slight depression on a thick tree branch, [ 12 ] at least 10 m (33 ft) above ground, with a single white (slightly spotted) egg measuring about 5.2 cm × 3.8 cm (2.0 ...

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  9. Rainbow pitta - Wikipedia

    en.wikipedia.org/wiki/Rainbow_Pitta

    The rainbow pitta (Pitta iris) is a small passerine bird in the pitta family, Pittidae, endemic to northern Australia, most closely related to the superb pitta of Manus Island. It has a velvet black head with chestnut stripes above the eyes, olive green upper parts, black underparts, a bright red belly and an olive green tail.