Hispaniolan Trogon (Priotelus roseigaster) (8082799519).jpg
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The Hispaniolan trogon (''Priotelus roseigaster'') is a species of bird in the family
Trogonidae The trogons and quetzals are birds in the order Trogoniformes which contains only one family, the Trogonidae. The family Trogonidae contains 46 species in seven genera. The fossil record of the trogons dates back 49 million years to the Early E ...
. It is endemic to
Hispaniola Hispaniola (, also ; es, La Española; Latin and french: Hispaniola; ht, Ispayola; tnq, Ayiti or Quisqueya) is an island in the Caribbean that is part of the Greater Antilles. Hispaniola is the most populous island in the West Indies, and th ...
(both
Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...
and the Dominican Republic) in the
Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean Se ...
. It is one of the only two trogon species found in the Caribbean. It is the national bird of Haiti.CIA World Factbook: National Symbols
/ref>


Identification

Trogons are brightly coloured birds with long, strongly graduated tails, small feet, and short, thick bills. The Hispaniolan trogon has metallic green upperparts, a gray throat and breast, and a red belly and is separated from the closely related Cuban trogon by the more typical tail of this species. The underside of the tail is dark, but each rectrix is broadly tipped with white. Males and females look similar but the females' wing coverts and secondaries lack the narrow white bars. The male average measurements for wing, tail, culem from base and tarsus are 135.2, 154, 17.3, 16.8 mm respectively. The female averages are 136.6, 154, 16.5, 16.4 mmGerbracht, Jeff. 2011. Hispaniolan Trogon (Priotelus roseigaster), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online: http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=26030


Vocalizations

The song is rather slow and can be heard from quite a distance. It has a low rattle.


Habitat

Its natural habitats are subtropical or tropical moist montane forests, and heavily
degraded forest A secondary forest (or second-growth forest) is a forest or woodland area which has re-grown after a timber harvest or clearing for agriculture, until a long enough period has passed so that the effects of the disturbance are no longer evident. ...
. It is threatened by habitat loss. It is mostly confined to a few remaining protected areas. It inhabits rain, dry, pine and broadleaved deciduous forests. Several early records included mangrove swamps west of MiragoaneWetmore, A., and B. H. Swales. 1931. The birds of Haiti and the Dominican Republic. United States National Museum Bulletin 155. but whether these were visitors or a resident population is unknown. It requires large, old decayed trees with holes for nesting.BirdLife International (2016) Species factsheet: Temnotrogon roseigaster. Downloaded from http://www.birdlife.org on 24/04/2016. It primarily occurs at 500–3,000 m, but there appears to be some altitudinal migration with birds observed at lower elevations in winter. In Haiti, it is restricted to the Massif de la Hotte and
Chaîne de la Selle Chaîne de la Selle is a mountain range in Haiti, on the island of Hispaniola. The range's Pic la Selle is the highest point of Haiti, at a height of 2,680 meters (8,793 feet) above sea level Mean sea level (MSL, often shortened to sea le ...
, due to extensive habitat loss. It is still quite common in the Dominican Republic, especially in the relatively undisturbed
Sierra de Baoruco The Bahoruco Mountain Range—Sierra de Bahoruco (or Sierra de Bahoruco) is a mountain range located in the far southwestern region of the Dominican Republic. It is within Pedernales Province, Pedernales, Independencia Province, Independencia, Bara ...
, although there has been a moderately rapid population reduction, owing to deforestation.


Diet

It is known to mainly eat insects, though it also takes small vertebrates such as
anole Dactyloidae are a family of lizards commonly known as anoles () and native to warmer parts of the Americas, ranging from southeastern United States to Paraguay. Instead of treating it as a family, some authorities prefer to treat it as a subfami ...
s and fruits, especially those of the West Indian sumac ('' Brunellia comocladifolia'').


Behaviour

Its foraging behaviour is presumed to be similar to that of other species of trogon: most food is taken in aerial sallies to fruit or to surrounding vegetation. The species primarily forages in the midstory of humid deciduous and pine forests. A study of mixed-species flocks on Hispaniola recorded two encounters with the Hispaniolan trogon, both of which were associated with mixed flocks.


Reproduction

The Hispaniolan trogon's
breeding season Seasonal breeders are animal species that successfully mate only during certain times of the year. These times of year allow for the optimization of survival of young due to factors such as ambient temperature, food and water availability, and cha ...
is thought to be March to July. The nest is a cavity in a tree, including cavities of the
Hispaniolan woodpecker The Hispaniolan woodpecker (''Melanerpes striatus'') is a medium-sized woodpecker endemic to the Caribbean island of Hispaniola (split between the Dominican Republic and Haiti). Description The Hispaniolan woodpecker is a gold and black barred ...
(''Melanerpes striatus''). The only known clutches are of two eggs; eggs are pale green and unmarked. Egg measurements ranged from 27.9 by 23.5 mm to 31.4 by 23.9 mm. The lengths of the incubation period and nestling periods are unknown. Generation length is estimated at 7.3 years


Population and conservation

The Hispaniolan trogon is a forest-dependent species, and is vulnerable to habitat loss or degradation. The IUCN Red List conservation status of the Hispaniolan trogon is assessed as Least Concern; however, its population is continuing to decline throughout its small range, owing to forest degradation and
fragmentation Fragmentation or fragmented may refer to: Computers * Fragmentation (computing), a phenomenon of computer storage * File system fragmentation, the tendency of a file system to lay out the contents of files non-continuously * Fragmented distributi ...
. Forest loss and fragmentation owing to shifting agriculture are causing a decline, particularly in moist forest areas. Dry forests have been considerably altered by charcoal production, and pine forests have been reduced as a consequence of indiscriminate logging and clear-cutting. In particular, recent habitat destruction along highways has caused a drastic decline of the population in the
Cordillera Central Central Cordillera refers to the New Guinea Highlands. Cordillera Central, meaning ''central range'' in Spanish, may refer to the following mountain ranges: * Cordillera Central, Andes (disambiguation), several mountain ranges in South America ** ...
, but it is occasionally seen on abandoned coffee farms and old cocoa groves in the Cordillera Septentrional. The species is also subject to hunting. However, as the range is relatively wide and not yet severely fragmented, the species is classified as Least Concern. Some populations are afforded protection by national parks, such as in the
Sierra de Baoruco The Bahoruco Mountain Range—Sierra de Bahoruco (or Sierra de Bahoruco) is a mountain range located in the far southwestern region of the Dominican Republic. It is within Pedernales Province, Pedernales, Independencia Province, Independencia, Bara ...
. Proposed conservation actions include monitoring the population regularly, effectively protecting national parks that hold populations of the species, encouraging forms of agriculture which do not require forest clearance, discouraging charcoal production in native forests, and raising awareness of the uniqueness of the species, as well as discourage hunting.


References

* American Ornithologists' Union
Check-list of North American Birds - Trogoniformes
Accessed on April 17, 2009. {{Taxonbar, from=Q1276050 Hispaniolan trogon National symbols of Haiti Birds of Haiti Birds of the Dominican Republic Endemic birds of Hispaniola Endemic birds of the Caribbean Hispaniolan trogon Hispaniolan trogon Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN