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| La Selle thrush | |
|---|---|
| Name | La Selle thrush |
| Status | CR |
| Status system | IUCN3.1 |
| Genus | Turdus |
| Species | swalesi |
| Authority | Cory, 1880 |
La Selle thrush The La Selle thrush is an endangered passerine endemic to the island of Hispaniola, historically associated with highland cloud forests and montane woodland on Hispaniola. First described by Charles B. Cory in 1880, it has been the subject of conservation concern involving organizations such as the IUCN and the Rainforest Trust. Conservation actions have intersected with initiatives by BirdLife International, American Bird Conservancy, and local agencies like Haiti's Ministry of Environment.
Described within the genus Turdus by Charles B. Cory, the La Selle thrush occupies a taxonomic position alongside Caribbean congeners such as the Aztec thrush and the American robin in broader treatments. The specific epithet honors early collectors on Hispaniola, and historical specimens were exchanged among institutions including the American Museum of Natural History and the Smithsonian Institution. Taxonomic treatments have been cited in works by ornithologists affiliated with the American Ornithological Society and the Royal Ontario Museum.
This medium-sized thrush displays an overall dark olive-brown plumage, with a paler throat and faint streaking on the breast, comparable in general form to members of the Turdus complex such as the Slaty-backed thrush. Morphological descriptions in museum catalogues contrast its bill and wing proportions with species documented in monographs produced by the Royal Society and field guides authored by contributors to the Cornell Lab of Ornithology. Vocalizations—reported in expedition notes associated with the Smithsonian Institution and recordings archived by the Macaulay Library—include a series of fluted phrases reminiscent of other Caribbean thrushes recorded during surveys sponsored by the National Geographic Society.
Historically confined to montane regions of southern Hispaniola, notably the La Selle range and adjacent highlands shared by Dominican Republic and Haiti, its distribution has been reduced to fragmented sites such as Parque Nacional Sierra de Bahoruco and remnant forest patches near Pic Macaya. Habitat descriptions in conservation assessments reference cloud forest, montane broadleaf forest, and secondary growth, with fieldwork conducted by researchers from Universidad Autónoma de Santo Domingo, Université d'Etat d'Haïti, and international teams funded by the World Bank and bilateral agencies. Remote-sensing analyses using datasets from NASA and the US Geological Survey have documented habitat loss trends in its range.
The species is considered largely terrestrial and secretive, foraging in the understory and leaf litter in a manner comparable to other island thrushes studied by ecologists affiliated with the University of Oxford and the University of California, Berkeley. Observational studies conducted during expeditions supported by the Caribbean Biodiversity Fund describe a territorial song behavior consistent with passerine communication frameworks found in literature from the Royal Society for the Protection of Birds. Interactions with sympatric species, including potential competition with introduced black rat populations and predation pressures involving feral cats, have been documented in reports prepared for the Convention on Biological Diversity.
Dietary records from stomach-content analyses deposited in collections at the American Museum of Natural History indicate an omnivorous regime comprising invertebrates, fruits, and seeds, paralleling feeding ecology summarized in texts from the Handbook of the Birds of the World project and in studies published via the Journal of Avian Biology. Seasonal shifts toward fruit consumption have been noted in coordination with fruiting phenology data from studies by the United Nations Environment Programme and regional botanical surveys conducted by the Missouri Botanical Garden.
Breeding biology remains incompletely described, but nest records and juvenile observations collected by field teams from the Cornell Lab of Ornithology and local universities suggest a breeding season coinciding with the regional wet season, nesting in dense understory vegetation similar to patterns reported for montane passerines in publications by the American Ornithologists' Union. Clutch size estimates derive from museum field notes archived at the Smithsonian Institution and independent surveys conducted by NGOs including BirdLife International.
Listed as Critically Endangered by the IUCN Red List, the La Selle thrush faces threats from habitat loss due to agricultural conversion, charcoal production, and logging documented in environmental assessments by USAID and the World Wildlife Fund. Political instability affecting conservation governance, noted in analyses by the International Crisis Group and development reports from the World Bank, has complicated protected-area management and community-based initiatives led by organizations such as the Haitian Biodiversity Alliance and the Dominican Republic Ministry of Environment and Natural Resources. Conservation actions underway include habitat protection proposals, reforestation projects supported by the Global Environment Facility and ex-situ awareness programs promoted through partnerships with the Smithsonian Tropical Research Institute and regional universities. Continued monitoring by international collaborations remains a priority to prevent extinction.
Category:Birds of Hispaniola Category:Endemic birds of the Caribbean