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The root box is estimated from a measurement of the wing width at the base (the root chord) and the difference between the wingspan and two times the extent of a single wing. [10] Alternatively, the total wing area can be estimated using the wingspan, wing length, and wing width and assuming simple geometric figures for the shape of the wings. [11]
Parrots, also known as psittacines (/ ˈ s ɪ t ə s aɪ n z /), [1] [2] are the 402 species of birds that make up the order Psittaciformes, found in most tropical and subtropical regions, of which 387 are extant. The order is subdivided into three superfamilies: the Psittacoidea ("true" parrots), the Cacatuoidea (cockatoos), and the ...
The kea is a large parrot measuring 46 to 50 cm (18 to 20 in) in total length, with some specimens possibly reaching 55 cm (22 in). [ 18 ] [ 19 ] [ 20 ] Adult kea weigh between 750 and 1,000 g (1.65 and 2.20 lb), with males averaging 956 g (2.108 lb) and females averaging 779 g (1.717 lb).
Parrots have featured in human writings, story, art, humor, religion, and music for thousands of years, such as Aesop's fable "The parrot and the cat", [127] the mention "The parrot can speak, and yet is nothing more than a bird" in The Book of Rites of Ancient China, [128] the Masnavi by Rumi of Persia in 1250 "The Merchant and the Parrot". [129]
The Pacific parrotlet (Forpus coelestis) is a small green parrot originating from South America. A typical specimen is 11–14 centimetres (4.3–5.5 in) long and typically weighs 30 grams or more. [2]
Size: The Timneh parrot is slightly smaller in size than the Congo grey parrot, but intelligence and talking ability remain comparable. They can range from about 22–28 cm in total length, and are considered a medium size parrot.
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Ranging in size from 26–37 cm (10– 14 + 1 ⁄ 2 in), rosellas are medium-sized parrots with long tails. [12] The feathers on their backs show an obvious scalloping appearance with colouring that differs between the species. [ 12 ]