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A major taxonomy review in 1974 resulted in 6 species in the genus Aulacorhynchus, [5] and this was adopted by virtually all later authorities. [3] [6] [7] [8] [9]In 2001, it was suggested that A. prasinus, as traditionally defined, was a species complex that should be split into 7 different species based on preliminary morphological evidence. [10]
The keel-billed toucan (Ramphastos sulfuratus), also known as sulfur-breasted toucan, keel toucan, or rainbow-billed toucan, is a colorful Latin American member of the toucan family. It is the national bird of Belize. [3] The species is found in tropical jungles from southern Mexico to Ecuador.
The toucan beak has a network of superficial blood vessels that support the rhamphotheca, the horny sheath of the bill. [7] The toucan is able to dilate or enlarge the beak's blood vessels when temperatures rise above a thermal neutral zone to allow for blood to pass readily into the beak, allowing for heat exchange and cooling.
Toucans (/ ˈ t uː k æ n /, UK: /-k ə n /) are Neotropical birds in the family Ramphastidae. The Ramphastidae are most closely related to the Toucan barbets. They are brightly marked and have large, often colorful bills. The family includes five genera and over 40 different species. Toucans are arboreal and typically lay two to four white ...
The International Ornithologists' Union (IOU) recognises 43 species of toucans in five genera. [1] This list does not include hybrid species, extinct prehistoric species, or putative species not yet accepted by the IOU.
The emerald toucanet was originally described in the genus Pteroglossus.For many years it was treated as having at least 14 subspecies. In 2008 the International Ornithological Committee (IOC) split 10 of those subspecies to create seven new species and retained four of them as subspecies of their current emerald toucanet sensu stricto.
Like other toucans, the black-throated toucanet is brightly marked and has a large bill. Adults are 33 to 38 cm (13 to 15 in) long and weigh about 120 to 210 g (4.2 to 7.4 oz). The sexes are alike in appearance although the female generally is smaller and shorter-billed.
Selenidera is a bird genus containing six species of dichromatic toucanets in the toucan family Ramphastidae. They are found in lowland rainforest (below 1,500 metres or 4,900 feet) in tropical South America with one species in Central America.