| Guianan trogon | |
|---|---|
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Trogoniformes |
| Family: | Trogonidae |
| Genus: | Trogon |
| Species: | T. violaceus |
| Binomial name | |
| Trogon violaceus Gmelin, JF, 1788 | |
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The Guianan trogon (Trogon violaceus), is a near passerine bird in the trogon and quetzal family Trogonidae. It is found in Brazil, French Guiana, Guyana, Suriname, Trinidad, and Venezuela. [1]
The Guianan trogon was formally described in 1788 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae . He placed it with the other trogons in the genus Trogon and coined the binomial name Trogon violaceus. [2] Gmelin based his account on a description and illustration by the German botanist Joseph Gottlieb Kölreuter that had been published 1765. [3] Gmelin did not specify a type locality, but this has been designated as Suriname. [4] The specific epithet violaceus is from Latin and means "violet-coloured". [5] The species is now considered to be monotypic: no subspecies are recognised. [6]
The Guianan trogon was formerly named the violaceous trogon and included the gartered trogon (T. caligatus) and the Amazonian trogon (T. ramonianus) as subspecies. [4] [7] A molecular phylogenetic study of the genus Trogon based on a single mitochondrial gene was published in 2008. It found that the Guianan trogon, the blue-crowned trogon (T. curucui) and the Surucua trogon (T. surrucura) formed a well defined clade but the three Guianan trogon subspecies did not form a monophyletic group. [8]
The Guianan trogon is treated as a monotypic species by the South American Classification Committee of the American Ornithological Society (SACC), the International Ornithological Committee (IOC), and the Clements taxonomy. BirdLife International's Handbook of the Birds of the World (HBW) treats it as the nominate subspecies of violaceous trogon. HBW also includes five other subspecies that the SACC, IOC, and Clements treat as members of two full species, gartered trogon (T. caligatus) and Amazonian trogon (T. ramonianus). [9] [1] [10] [11] The SACC notes that the split into three species might deserve reevaluation. [9]
The Guianan trogon is 23 to 25 cm (9.1 to 9.8 in) long and weighs 38 to 57 g (1.3 to 2.0 oz). Males and females have very different plumage. Adult males have a violet-blue head with a black mask and throat; their bill is pale blue-gray and their dark eye is surrounded by bare pale yellow skin. The violet-blue of their head extends to the middle of their breast, where a narrow white band separates it from the bright yellow of the rest of their underparts. Their upperparts are bright metallic green and their wings so finely marked with black and white that they appear dark gray-brown. Their tail's upper surface is violet-blue with black tips to the feathers; the lower surface has fine black and white bars and wide white tips to the feathers. Adult females' bills have a blackish culmen and the face has white arcs above and below the eye. Their head and upperparts are dark gray and their wings are thinly but densely barred black and white. Their belly is a duller yellow than the male's and has a gray wash on the flanks. The underside of their tail appears barred on its sides. Juvenile males have browner wings and less white on their undertail than adults. Juvenile females are like the adult. [12]
The Guinan trogon's song is "a long series of rapid hollow downslurred whistles, kyu-kyu-kyu-kyu-kyu-kyu". Its calls include "rolling chattering." [12]
The Guianan trogon is non-migratory. It is found in eastern Venezuela, the Guianas, and adjacent northern Brazil. It inhabits a variety of semi-open landscapes such as savanna, the edges and openings of primary forest, young secondary forest, cacao and coffee plantations, and terra firme forest. It ranges as high as 1,200 m (3,900 ft) in Venezuela. [12]
The Guianan trogon's diet is fruit and arthropods that it collects while hovering after short sallies from a perch. It often joins mixed-species foraging flocks. [12]
The Guianan trogon's breeding season is not fully defined but appears to be within the November to June period. It excavates a cavity in arboreal nests of paper wasps, ants, or termites and also in rotten wood or a fern root mass. The clutch size is two or three eggs. The incubation time is not known; fledging occurs at least 17 days after hatch. [12]
The IUCN follows HBW taxonomy and so has not assessed the Guianan trogon separately from the violaceous trogon sensu lato . [13] The species is "[r]are and local in Venezuela, but common in Trinidad and Suriname." [12]
The collared trogon is a near passerine bird in family Trogonidae, the quetzals and trogons. It is found in Mexico, throughout Central America, and in northern South America.
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The collared aracari or collared araçari is a near-passerine bird in the toucan family Ramphastidae. It is found from Mexico to Colombia and Venezuela.
The Amazonian black-throated trogon is a bird in the family Trogonidae, the trogons and quetzals. Although it has also been called "yellow-bellied trogon" it is not the only trogon with a yellow belly. It is found in every mainland South American country except Argentina, Chile, Paraguay, and Uruguay.
The speckled mousebird is the largest species of mousebird, as well as one of the most common. It is found throughout most of Central, Eastern and Southern Africa.
The western emerald is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is found in Colombia and Ecuador.
The straight-billed hermit is a species of bird in the family Trochilidae, the hummingbirds. It is found in Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela.
Geoffroy's daggerbill, Geoffroy's wedgebill, or eastern wedge-billed hummingbird is a species of hummingbird in the family Trochilidae. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela.
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The ash-throated crake is a species of bird in the subfamily Rallinae of the rail, crake, and coot family Rallidae. It is found in every mainland South American country except Chile.
The blue-crowned trogon is a species of bird in the family Trogonidae, the quetzals and trogons. It is found in Brazil, Argentina, Bolivia, Colombia, Ecuador, Paraguay, and Peru. As with all trogons, this species is sexually dimorphic. The male has a blue head with an orange orbital ring, a red belly with a narrow white breastband and a green back. The female differs in having a grey head, a grey back and a broken white eye-ring.
The black-headed trogon is a species of bird in the family Trogonidae. It is found in Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua.
The gartered trogon, also known as the northern violaceous trogon, is a bird in the family Trogonidae, the quetzals and trogons. It is found in Mexico, all of Central America, and Colombia, Ecuador, Peru, and Venezuela.
The Amazonian trogon, is a species of bird in the family Trogonidae, the trogons and quetzals. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.
The green-backed trogon, also known as the Amazonian white-tailed trogon, is a bird in the trogon family Trogonidae. It is widely distributed across the Amazon rainforest with a disjunct population on the southeast coast of Brazil. As with all trogons, this species is sexually dimorphic. The male has a yellow belly without a white breastband, a blue head with a pale-blue orbital eye-ring, a blue bill, a green back and a green tail that is mostly white below. The female is duller with a dark grey head, a dark grey back and some black barring beneath the tail.
The foothill screech owl is a species of owl in the family Strigidae. It is found in Bolivia, Brazil, Colombia, Ecuador, Guyana, Suriname, and Venezuela.
The northern black-throated trogon, also known as the graceful black-throated trogon, is a bird in the family Trogonidae, the trogons and quetzals. It is found from southeastern Honduras to northwestern Colombia.
The Choco black-throated trogon, also known as Kerr's black-throated trogon, is a bird in the family Trogonidae, the trogons and quetzals. It is found in Colombia and Ecuador.
The Atlantic black-throated trogon is a bird in the family Trogonidae, the trogons and quetzals. It is found in Argentina, Brazil, and Paraguay.