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The toco toucan (Ramphastos toco) is a species of bird in the toucan family Ramphastidae. It is the largest species of toucan and has a distinctive appearance, with a black body, a white throat, chest and uppertail-coverts, and red undertail-coverts. Its most conspicuous feature is its massive beak, which is yellow-orange with a black base and ...
Toucans range in size from the lettered aracari (Pteroglossus inscriptus), at 130 g (4.6 oz) and 29 cm (11 in), to the toco toucan (Ramphastos toco), at 680 g (1.50 lb) and 63 cm (25 in). Their bodies are short (of comparable size to a crow's) and compact. The tail is rounded and varies in length, from half the length to the whole length of the ...
The toucan beak has a synergistic sandwich structure with a thin rigid outer shell encapsulating the bulk of the volume which is a cellular solid. [1] The exterior layer, known as the rhamphotheca, is composed of several layers of overlapping sheets of beta keratin. [1]
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.
National Geographic announces four new Signature Land Expeditions. The trips include expeditions to Australia, Portugal and the Azores, Sri Lanka, and Southern Africa. Furthermore, trips that have ...
The largest species of this order is the toco toucan (Ramphastos toco) of the neotropic forest. Large specimens of this toucan can weigh to 870 g (1.92 lb) and 0.65 m (2.1 ft), at which size the beak alone can measure approximately 20 cm (7.9 in). [131]
The study found that toucans could be divided into six distinct clades, each with different bill morphologies and geographic distributions. The study also suggested that the toucan genus had diversified during the Pliocene epoch, around 5 million years ago, with the rapid diversification of several lineages during the Pleistocene epoch, around ...
The rufous-bellied thrush is the national bird of Brazil. Brazil has one of the richest bird diversities in the world. The avifauna of Brazil include a total of 1861 confirmed species of which 239 are endemic. Five have been introduced by humans, 93 are rare or vagrants, and seven are known or thought to be extinct or extirpated. An additional ...