Blue-crowned trogon

Source: Wikipedia, the free encyclopedia.

Blue-crowned trogon
Male, southeast Brazil

Least Concern  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Trogoniformes
Family: Trogonidae
Genus: Trogon
Species:
T. curucui
Binomial name
Trogon curucui
Linnaeus, 1766
Synonyms
  • Trogon bolivianus Ogilvie-Grant, 1892

The blue-crowned trogon (Trogon curucui) is a species of

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.

Taxonomy

The blue-crowned trogon was

sister to the yellow-bellied Guianan trogon (T. violaceus).[7]

Three subspecies are recognised:[8]

  • T. c. peruvianus Swainson, 1838 – south Colombia to Bolivia and central Brazil
  • T. c. curucui Linnaeus, 1766 – east Brazil
  • T. c. behni Gould, 1875 – east Bolivia, southwest Brazil, Paraguay and north Argentina
Near Campo Grande in Brazil
Illustration by Keulemans, 1892

Description

The blue-crowned trogon is about 24 cm (9.4 in) long and weighs 39 to 63 g (1.4 to 2.2 oz). The male of the nominate subspecies has a blackish face and throat with an orange ring around the eye. The crown, sides of the neck, and breast are glossy greenish blue, the nape turquoise-green, and the back metallic bronzy green. The upperside of the tail is greenish blue and the underside has black and white bars. The folded wing has fine vermiculation that looks gray at a distance. The breast is separated from the rosy red belly and vent by a white band. The female is gray where the male is green and the belly is pinkish red. Instead of the orange ring around the eye there are white arcs before and after it. The underside of the tail has a different black and white pattern. The male of T. c. peruvianus has a bluish gloss to the bronzy green back, a much reduced white breast band, and narrower white bars on the undertail. The male T. c. behni's back is more intensely bronze than the nominate's, and the breast is greener.[9]

The male blue-crowned trogon's song is "a fast, evenly paced repetition of...'kow' [notes], lasting about 4-5 seconds and ending abruptly". Both sexes give a "churrr" call.[10]

Distribution and habitat

The blue-crowned trogon is found throughout the

Andean foothills of southern Colombia, eastern Ecuador and Peru, and northwestern Bolivia and from there east into Amazonian Brazil as far as the Tapajós River. T. c. behni is found in eastern and southern Bolivia, southwestern Brazil, much of Paraguay, and northern Argentina.[8][9]

It inhabits a variety of landscapes across its large range. Forest types include várzea, gallery, tall secondary, and dry semi-deciduous. It occupies all levels from the understory to the canopy. It is also found in savanna woodland, dry palm forest, caatinga, and scrublands. In the northern part of its range it seldom occurs above 500 m (1,600 ft) of elevation but reaches as high as 1,500 m (4,900 ft) in Argentina and 1,750 m (5,700 ft) in Bolivia.[9]

Behavior

Feeding

The blue-crowned trogon's diet includes a wide variety of insects and spiders, and also fruits. It sometimes joins mixed-species foraging flocks.[9]

Breeding

The blue-crowned trogon's breeding season varies across its range. It starts as early as May in Colombia and spans from October to December in Argentina. It nests in cavities in arboreal

termitaria. The clutch size is two or three eggs.[9]

Status

The

IUCN has assessed the blue-crowned trogon as being of Least Concern, though its population is unknown and is believed to be decreasing.[1] It is rare to common in different parts of its range and occurs in several protected areas in Bolivia, Brazil, and Argentina.[9]

References

  1. ^ a b BirdLife International (2018). "Blue-crowned Trogon Trogon curucui". IUCN Red List of Threatened Species. 2018. Retrieved 26 October 2021.
  2. ^ Linnaeus, Carl (1766). Systema naturae : per regna tria natura, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1, Part 1 (12th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 167.
  3. ^ Peters, James Lee, ed. (1945). Check-List of Birds of the World. Vol. 5. Cambridge, Massachusetts: Harvard University Press. p. 157.
  4. ^ Marcgrave, Georg (1648). Historia Naturalis Brasiliae: Liber Quintus: Qui agit de Avibus (in Latin). Lugdun and Batavorum (London and Leiden): Franciscum Hackium and Elzevirium. p. 211.
  5. doi:10.1007/BF01982596
    .
  6. ISBN 978-1-4081-2501-4
    .
  7. PMID 18302692
    .
  8. ^
    Rasmussen, Pamela, eds. (August 2022). "Mousebirds, Cuckoo Roller, trogons, hoopoes, hornbills"
    . IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 31 December 2022.
  9. ^ a b c d e f Collar, N. (2020). Blue-crowned Trogon (Trogon curucui), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.blctro1.01 retrieved October 26, 2021
  10. ISBN 978-0-8014-8721-7
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Blue-crowned_trogon&oldid=1230052115"