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The common shelduck (Tadorna tadorna) is a waterfowl species of the shelduck genus, Tadorna. It is widespread and common in the Euro-Siberian region of the Palearctic , mainly breeding in temperate and wintering in subtropical regions; in winter, it can also be found in the Maghreb .
[4] [5] The type species is the common shelduck. [5] The genus name comes from the French name Tadorne for the common shelduck. [6] It may originally derive from Celtic roots meaning "pied waterfowl", essentially the same as the English "shelduck". [7] A group of them is called a "dopping," taken from the Harley Manuscript. [8]
The following other wikis use this file: Usage on de.wiktionary.org Brandgans; Usage on fy.wikipedia.org Berchein; Bercheinen; Usage on lt.wikipedia.org
Aspect ratio is the ratio of wingspan to the mean of its chord (or the square of the wingspan divided by wing area). Wing loading is the ratio of weight to wing area. Most kinds of bird wings can be grouped into four types, with some falling between two of these types.
They are large, black-and-white or completely black, with long wings and deeply forked tails. The males have coloured inflatable throat pouches. They do not swim or walk and cannot take off from a flat surface. Having the largest wingspan-to-body-weight ratio of any bird, they are essentially aerial, able to stay aloft for more than a week. [25]
Radjah shelduck: Radjah radjah (Garnot & Lesson, RP, 1828) 55 Common shelduck: Tadorna tadorna (Linnaeus, 1758) 56 Ruddy shelduck: Tadorna ferruginea (Pallas, 1764) 57 South African shelduck: Tadorna cana (Gmelin, JF, 1789) 58 Australian shelduck: Tadorna tadornoides (Jardine & Selby, 1828) 59 Paradise shelduck: Tadorna variegata (Gmelin, JF ...
Ruddy shelduck at 4,250 m (13,940 ft), Chandra Taal, Spiti, Himachal Pradesh. The ruddy shelduck grows to a length of 58 to 70 cm (23 to 28 in) and has a 110–135 cm (43–53 in) wingspan. The male has orange-brown body plumage and a paler, orange-brown head and neck, separated from the body by a narrow black collar.
The forelegs are reduced in the Nymphalidae Diagram of an insect leg. The thorax, which develops from segments 2, 3, and 4 of the larva, consists of three invisibly divided segments, namely prothorax, metathorax, and mesothorax. [11] The organs of insect locomotion – the legs and wings – are borne on the thorax.