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  2. Bird vision - Wikipedia

    en.wikipedia.org/wiki/Bird_vision

    Vision is the most important sense for birds, since good eyesight is essential for safe flight. 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 ...

  3. Bird's-eye view - Wikipedia

    en.wikipedia.org/wiki/Bird's-eye_view

    Viewing frustum. v. t. e. A bird's-eye view is an elevated view of an object or location from a very steep viewing angle, creating a perspective as if the observer were a bird in flight looking downward. Bird's-eye views can be an aerial photograph, but also a drawing, and are often used in the making of blueprints, floor plans and maps.

  4. Bird - Wikipedia

    en.wikipedia.org/wiki/Bird

    Birds are a group of warm-blooded vertebrates constituting the class Aves (/ ˈeɪviːz /), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

  5. Pecten oculi - Wikipedia

    en.wikipedia.org/wiki/Pecten_oculi

    The pecten or pecten oculi is a comb -like structure of blood vessels belonging to the choroid in the eye of a bird. It is a non- sensory, pigmented structure that projects into the vitreous humor from the point where the optic nerve enters the eyeball. [1] The pecten is believed to both nourish the retina and control the pH of the vitreous ...

  6. Bird anatomy - Wikipedia

    en.wikipedia.org/wiki/Bird_anatomy

    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.

  7. Kingdom (biology) - Wikipedia

    en.wikipedia.org/wiki/Kingdom_(biology)

    This six-kingdom model is commonly used in recent US high school biology textbooks, but has received criticism for compromising the current scientific consensus. [13] But the division of prokaryotes into two kingdoms remains in use with the recent seven kingdoms scheme of Thomas Cavalier-Smith, although it primarily differs in that Protista is ...

  8. Biolinguistics - Wikipedia

    en.wikipedia.org/wiki/Biolinguistics

    Biolinguistics can be defined as the study of biology and the evolution of language. It is highly interdisciplinary as it is related to various fields such as biology, linguistics, psychology, anthropology, mathematics, and neurolinguistics to explain the formation of language. It seeks to yield a framework by which we can understand the ...

  9. Iris (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Iris_(anatomy)

    The iris (pl.: irides or irises) is a thin, annular structure in the eye in most mammals and birds, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm.

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