Long-tailed Koel (Urodynamis taitensis) - BirdLife species factsheet

Long-tailed Koel Urodynamis taitensis

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Urodynamis taitensis (del Hoyo and Collar 2014) was previously placed in the genus Eudynamys.

Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

Migratory status	full migrant	Forest dependency	medium
Land-mass type		Average mass	117 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,520,000 km²
Extent of Occurrence (non-breeding)	38,700,000 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	4.64 years	-	-	-

Population justification: The global population size has not been quantified, but the species is reported to be not uncommon (del Hoyo et al. 1997). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 7.6% within its mapped range over the past three generations (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification: .

Country/territory distribution

Country/Territory	Presence	Origin	Breeding visitor	Non-breeding visitor
American Samoa	extant	native
Australia	extant	vagrant
Cook Islands	extant	native
Fiji	extant	native		yes
French Polynesia	extant	native
Guam (to USA)	extant	vagrant
Kiribati	extant	native
Marshall Islands	extant	native		yes
Micronesia, Federated States of	extant	native		yes
Nauru	extant	native
New Zealand	extant	native	yes
Niue (to New Zealand)	extant	native
Norfolk Island (to Australia)	extant	native
Northern Mariana Islands (to USA)	extant	vagrant
Palau	extant	vagrant
Papua New Guinea	extant	vagrant
Pitcairn Islands (to UK)	extant	native
Samoa	extant	native
Solomon Islands	extant	native
Tokelau (to New Zealand)	extant	native
Tonga	extant	native
Tuvalu	extant	native
United States Minor Outlying Islands (to USA)	extant	native		yes
Wallis and Futuna Islands (to France)	extant	native

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	non-breeding
Forest	Subtropical/Tropical Moist Lowland	suitable	breeding
Shrubland	Subtropical/Tropical Dry	suitable	non-breeding
Shrubland	Subtropical/Tropical Dry	suitable	breeding
Shrubland	Subtropical/Tropical Moist	suitable	non-breeding
Shrubland	Subtropical/Tropical Moist	suitable	breeding
Altitude	0 - 1190 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Long-tailed Koel Urodynamis taitensis. Downloaded from https://datazone.birdlife.org/species/factsheet/long-tailed-koel-urodynamis-taitensis on 25/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 25/11/2024.