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The cockatiel is one of the most popular and easiest parrots to keep as a pet, [126] [127] and many colour mutations are available in aviculture. [36] A pet cockatiel. This parrot is about 32 cm (13 in) long and is by far the smallest and lightest cockatoo.
The unique, parakeet (meaning long-tailed parrot) morphological feature is a consequence of the decrease in size and accompanying change of ecological niche. Sequence analysis of intron 7 of the nuclear β - fibrinogen gene, on the other hand, indicates that it may yet be distinct enough as to warrant recognition of the Nymphicinae rather than ...
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 ...
It is a distinctive bird with a large crest and has one of the largest bills of any parrot (only the hyacinth macaw's is larger). This powerful bill enables palm cockatoos not only to eat very hard nuts and seeds, but also enables males to break off thick (about 1 in (2.5 cm)) sticks from live trees to use for a drumming display. [19]
Although it is sometimes feathered in parrots, [91] the cere is typically bare and often brightly coloured. [92] In raptors, the cere is a sexual signal which indicates the "quality" of a bird; the orangeness of a Montague's harrier 's cere, for example, correlates to its body mass and physical condition. [ 93 ]
Together with the kākāpō, and the extinct parrots in the genus Nelepsittacus, they form the parrot superfamily Strigopoidea. The Nestor's genus contains two extant parrot species from New Zealand and two extinct species from Norfolk Island, Australia and Chatham Island, New Zealand, respectively. All species are large stocky birds with short ...
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Adult birds usually measure approximately 32 cm (or about 14 inches) in length, including the tail. Like many parrots, the horned parakeet is primarily green in color. This parrot has a yellowish nape with a black and red face and bluish wings and tail. Its most striking feature is a two-feather black crest, with the crest feathers tipped in red.