Violaceous Trogon
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Violaceous Trogon | ||||||||||||||
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Trogon violaceus Gmelin, 1788 |
The Violaceous Trogon, Trogon violaceus, is a near passerine bird in the trogon family, Trogonidae. The nominate race occurs in southeastern Colombia, Bolivia, Venezuela, the Amazon basin, the Guianas and Trinidad. The form T. v. caligatus breeds in Mexico, Central America and south to Peru. The latter form is often split as a separate species, the Northern Violaceous Trogon, Trogon caligatus (Ridgway, 1911), leaving the nominate form as the Amazonian Violaceous Trogon.
It is a resident of moist tropical forests, where it nests in a wasp, ant or termite nest or a hole in a rotten tree, with a typical clutch of two or three white eggs.
Violaceous Trogons feed on insects and small fruit, and their broad bills and weak legs reflect their diet and arboreal habits. Although their flight is fast, they are reluctant to fly any distance. They typically perch upright and motionless.
Trogons have distinctive male and female plumages, with soft, often colourful, feathers. This relatively small species is about 23cm long and weighs 56 g. The head and upper breast of the male are blue and the back is green, becoming bluer on the rump. A white line separates the breast from the golden yellow underparts. The undertail is white with black barring, and the wings are black, vermiculated with white. The female Violaceous Trogon has a dark grey back, head and breast.
This species superficially resembles the White-tailed Trogon, but the latter is larger and has a whiter tail.
The shade of the blue of the head differs between the two forms, but the call is the main distinction between the Northern and Amazonian Violaceous Trogons. The former has a slurred whistled cuh-cuh-cuh, and Amazonian has a soft cow cow, cow.
[edit] References
- BirdLife International (2004). Trogon violaceus. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 06 May 2006. Database entry includes justification for why this species is of least concern
- ffrench, Richard (1991). A Guide to the Birds of Trinidad and Tobago, 2nd edition, Comstock Publishing. ISBN 0-8014-9792-2.
- Hilty, Steven L (2003). Birds of Venezuela. London: Christopher Helm. ISBN 0-7136-6418-5.
[edit] External links
- Violaceous Trogon videos on the Internet Bird Collection
- Violaceous Trogon photo gallery VIREO
- Photo-High Res; Article moonbeampublishing