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  2. Budgerigar - Wikipedia

    en.wikipedia.org/wiki/Budgerigar

    This is an accepted version of this page This is the latest accepted revision, reviewed on 14 February 2025. Small, long-tailed, seed-eating parakeet Budgerigar Temporal range: Pliocene–Holocene PreꞒ Ꞓ O S D C P T J K Pg N Blue cere indicates male Flaking brown cere indicates female in breeding condition Conservation status Least Concern (IUCN 3.1) Scientific classification Domain ...

  3. 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.

  4. Budgerigar colour genetics - Wikipedia

    en.wikipedia.org/wiki/Budgerigar_colour_genetics

    The wildtype (natural-coloured or wild occurring) budgerigar's color is called Lightgreen. The feathers of most parrot species, including budgerigars, contain both a black type of melanin named eumelanin along with a basic yellow pigment named psittacofulvin (psittacin for short).

  5. Uropygial gland - Wikipedia

    en.wikipedia.org/wiki/Uropygial_gland

    Position of the uropygial gland, indicated on a budgerigar Uropygial gland of a blue jay. The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of preening.

  6. Dominant Grey budgerigar mutation - Wikipedia

    en.wikipedia.org/wiki/Dominant_Grey_budgerigar...

    When combined with the Dark mutation the body colour of both Greys and Grey-Greens becomes slightly darker, but the effect is much smaller than the effect of the Dark mutation on Light Greens and Skyblues.

  7. Parakeet - Wikipedia

    en.wikipedia.org/wiki/Parakeet

    The Australian budgerigar, or shell parakeet, is a popular pet and the most common parakeet. Parakeets comprise about 115 species of birds that are seed-eating parrots of small size, slender build, and long, tapering tails.

  8. Avian brain - Wikipedia

    en.wikipedia.org/wiki/Avian_brain

    Brains of an emu, a kiwi, a barn owl, and a pigeon, with visual processing areas labelled. The avian brain is the central organ of the nervous system in birds. Birds possess large, complex brains, which process, integrate, and coordinate information received from the environment and make decisions on how to respond with the rest of the body.

  9. Bird vision - Wikipedia

    en.wikipedia.org/wiki/Bird_vision

    Diagram of a bird cone cell By far the most abundant cone pigment in every bird species examined is the long-wavelength form of iodopsin , which absorbs at wavelengths near 570 nm. This is roughly the spectral region occupied by the red- and green-sensitive pigments in the primate retina, and this visual pigment dominates the colour sensitivity ...