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Darwin's finches. Darwin's finches (also known as the Galápagos finches) are a group of about 18 species of passerine birds. [1][2][3][4] They are well known for their remarkable diversity in beak form and function. [5] They are often classified as the subfamily Geospizinae or tribe Geospizini. They belong to the tanager family and are not ...
The beak, bill, or rostrum is an external anatomical structure found mostly in birds, but also in turtles, non-avian dinosaurs and a few mammals. A beak is used for pecking, grasping, and holding (in probing for food, eating, manipulating and carrying objects, killing prey, or fighting), preening, courtship, and feeding young.
Toucan beaks are responsible for only one twentieth of the entire mass of the creature allowing the bird to fly even with its massive beak. [12] As previously mentioned, the keratin shell and closed-cell foam organization in the toucan beak plays a role in the beak's characteristic energy absorption, compressive resistance, high stiffness and ...
When preening, a bird (such as this red lory) draws individual feathers through its beak, realigning and re-interlocking the barbules.. Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites in check.
The shoebill is a tall bird, with a typical height range of 110 to 140 cm (43 to 55 in) and some specimens reaching as much as 152 cm (60 in). Length from tail to beak can range from 100 to 140 cm (39 to 55 in) and wingspan is 230 to 260 cm (7 ft 7 in to 8 ft 6 in). Weight has reportedly ranged from 4 to 7 kg (8.8 to 15.4 lb).
Ardea ciconia Linnaeus, 1758. The white stork (Ciconia ciconia) is a large bird in the stork family, Ciconiidae. Its plumage is mainly white, with black on the bird's wings. Adults have long red legs and long pointed red beaks, and measure on average 100–115 cm (39–45 in) from beak tip to end of tail, with a 155–215 cm (61–85 in) wingspan.
Strigopoidea (New Zealand parrots) Range of parrots, all species (red) Parrots (Psittaciformes), also known as psittacines (/ ˈsɪtəsaɪnz /), [1][2] are birds with a strong curved beak, upright stance, and clawed feet. [a] They are classified in four families that contain roughly 410 species in 101 genera, found mostly in tropical and ...
Ornithology is a branch of zoology that concerns the study of birds. [1] Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. [2] It has also been an area with a large contribution made by amateurs in terms of time, resources, and financial support.
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