Buff-collared Nightjar (Antrostomus ridgwayi) | Details

Buff-collared Nightjar Antrostomus ridgwayi

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Antrostomus ridgwayi (del Hoyo and Collar 2014) was previously placed in the genus Caprimulgus.

Taxonomic source(s)
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.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2020	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	not a migrant	Forest dependency	medium
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,980,000 km²	medium
Extent of Occurrence (non-breeding)	1,270,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	2000000 mature individuals	poor	estimated	2002
Population trend	decreasing	-	suspected	-
Generation length	3.7 years	-	-	-

Population justification: The global population is estimated to number 2 million mature individuals (Partners in Flight 2019).

Trend justification: The species is tentatively assessed as being in slow decline, which is thought to be caused by low levels of habitat loss (del Hoyo et al. 1999).

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor
Guatemala	extant	native	yes
Honduras	extant	native	yes
Mexico	extant	native	yes	yes
Nicaragua	extant	native	yes
USA	extant	native		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	major	resident
Shrubland	Subtropical/Tropical Dry	suitable	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	0 - 2400 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Buff-collared Nightjar Antrostomus ridgwayi. Downloaded from https://datazone.birdlife.org/species/factsheet/buff-collared-nightjar-antrostomus-ridgwayi on 22/12/2024.
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 22/12/2024.