Bird Families

Thick-knee - Burhinus bistriatus, Burhinidae

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Burhinus bistriatus - Œdicnème bistrié Burhinus bistriatus ... Wikipédia en Français

Burhinus bistriatus - Alcaraván dara… Wikipedia Español

Burhinus bistriatus - meksikinis storkulnis statusas T sritis zoologija | vardynas atitikmenys: lot. Burhinus bistriatus angl. double striped thick knee vok. Dominikanertriel, m rus. dominican avdotka, f pranc. oedicnème bistrié, m ryšiai: platesnis terminas -…… Paukščių pavadinimų žodynas

Burhinus - Burhinus ... Wikipédia en Français

Burhinus - Burhinus ... Wikipédia en Français

Burhinus - Taxobox name = Burhinus image caption = Burhinus capensis regnum = Animalia phylum = Chordata classis = Aves ordo = Charadriiformes familia = Burhinidae genus = Burhinus Burhinus is a genus of bird in the Burhinidae family. It contains the…… Wikipedia

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Œdicnème bistrié - Burhinus bistriatus ... Wikipédia en Français

Oedicneme bistrie - Œdicnème bistrié Burhinus bistriatus ... Wikipédia en Français

Œdicneme bistrie - Œdicnème bistrié Burhinus bistriatus ... Wikipédia en Français

Double-striped Thick-knee - At the Milwaukee County Zoological Gardens Conservation status ... Wikipedia

Usage Information

Photo "Two-striped Thick-knee - Burhinus bistriatus - Family Burhinidae, breeders in Central and South America" ​​can be used for personal and commercial purposes according to the conditions of the purchased Royalty-free license. The image is available for download in high resolution quality up to 5196x3464.

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Description

Body length 40-57 cm, weight from 0.4 to 1.1 kg. Sexual dimorphism in color is not pronounced. The legs are high, the neck is relatively short (although there are 16 cervical vertebrae, like in the yakan), the head is large, the beak is elongated (more than half the length of the head), relatively thick. The eyes are large. The nostrils are elongated, slit-like, approximately in the middle of the beak. The wing is long, obtuse, almost square at the end with 11 primary flight feathers. The first flywheel is not reduced. A strongly rounded tail of 12-14 long tail feathers is sometimes wedge-shaped. The legs are high, relatively thick. The hind toe is absent; there is a small membrane at the base of the 3 relatively short front toes. There are bulging pads on the underside of the toes. This leg structure is very reminiscent of the bustard, but it may well be acquired as an adaptation to a running lifestyle.

The color of the avdotok is protective, sandy-brown tones with longitudinal or teardrop-shaped dark streaks, a streaky pattern, the bottom is light, like the forehead, eyebrows, stripes on the sides of the head. Sometimes a dark streak runs through the eye. On the wings and tail there are bright contrasting areas of black and white fields that have a signal value in the threat pose - an upright stance with spread wings and an unfolded tail. At dusk and at night, the value of white fields as markers increases even more, as happens, for example, in nightjars. However, unlike nightjars, in which white spots are a sign of males, both sexes are colored the same in avdotoks, almost do not differ in size. The type of coloration, black-and-white fields on dull wide wings, also give the bustard look to the bustard. The color of the beak is from yellow with a black top to black, the iris and legs are yellow in all species.

Spread

All continents, except Antarctica, are mainly tropical and subtropical latitudes. Open landscapes - clay and sandy deserts and semi-deserts, steppes with a thin grass cover.

Lifestyle

They lead a twilight and nocturnal lifestyle. Mostly ground-based, run and fly well. Monogamous, live in separate pairs. The nest is a hole in the ground with a small amount of vegetation. In clutch there are 2-3 eggs with a spotted pattern. Both members of the pair or the female incubate for 4 weeks. Some breed twice a season. Chicks hatch sighted, pubescent and, as a rule, the next day they are already able to move with their parents and hide in case of danger. They rise on the wing at the age of 1.5-2 months. During the non-nesting period, they unite in flocks, sometimes up to several dozen birds. They feed on insects (mainly coleoptera), mollusks, small lizards.

Classification

The family has 2 genera with 10 species:

  • Avdotka (Burhinus) (8 species).
    • The common avdotka (Burhinus oedicnemus) is the size of a pigeon, with a brownish-gray top with dark trunk stripes, a whitish bottom and white rudders with a grayish transverse pattern. The beak is yellow, black to the top. Legs are yellow. It lives in southern Europe and northern Africa to the east to Myanmar, to the north it reaches Belarus, Ukraine, the Caucasus, Kazakhstan and Central Asia.
    • Indian avdotka (Burhinus indicus) lives in the Indian subcontinent and in southeast Asia.
    • Cape Avdotka (Burhinus capensis) lives in the dry acacia and park savannas of South Africa.
    • The water avdotka (Burhinus vermiculatus) is somewhat smaller in size and more gray in color than Burhinus capensis, settles in river valleys and near lakes from Central to South Africa.
    • The Senegalese avdotka (Burhinus senegalensis) is similar in biology to the water avdotka, lives in the western, central and eastern regions of Africa.
    • The Peruvian avdotka (Burhinus superciliaris) lives along the Pacific coast of South America from southern Ecuador to the far north of Chile.
    • Dominican avdotka (Burhinus bistriatus) or two-lane avdotka lives in Central and South America from southern Mexico to northern Brazil.
  • Reef avdotki (Esacus) (2 species)
    • Great reef avdotka (Esacus recurvirostris) lives along the shores of the continental part of tropical Asia, on the islands of the Malay Archipelago
    • The reef avdotka (Esacus giganteus) lives in Australasia.

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