• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2022	Least Concern
2016	Near Threatened	A2c+3c+4c
2012	Near Threatened	A2c+3c+4c
2008	Near Threatened	A2c; A3c; A4c
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	high
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	122,000 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	10000-19999 mature individuals	poor	suspected	2021
Population trend	decreasing	poor	suspected	2016-2028
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-5%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-5%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-5%	-	-	-
Generation length	3.9 years	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. 1996). However, based on the low number of observational records (per eBird 2021) within the range, it is assumed that the population may be moderately small; it is here placed in the band 10,000-19,999 mature individuals.

Trend justification: The species is suspected to be undergoing a slow decline due to habitat loss and degradation. Tree cover loss within the species range equated to c. 4% over the past three generations; this rate has further slowed since 2016, equating to c. 2% over three generations ([11.7 years; Bird et al. 2020], Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). The species, although forest dependent, does also occur in edge habitats and can be found at secondary forests (Parker et al. 1996, Ridgely and Greenfield 2001, Byington 2020). As such, rates of decline are not thought to exceed 5% over three generations.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Colombia	extant	native	yes
Ecuador	extant	native	yes

Country/Territory	IBA Name
Colombia	Parque Nacional Natural Ensenada de Utría
Colombia	Reserva Natural El Pangán
Colombia	Reserva Natural Río Ñambí
Ecuador	Cayapas-Santiago-Wimbí
Ecuador	Corredor Awacachi
Ecuador	Mache Chindul Ecological Reserve and surrouding areas (Reserva Ecológica Mache-Chindul IBA)
Ecuador	Mashpi-Pachijal
Ecuador	Mataje-Cayapas-Santiago
Ecuador	Reserva Ecológica Cotacachi-Cayapas
Ecuador	Río Caoní
Ecuador	Territorio Étnico Awá y alrededores
Ecuador	Verde-Ónzole-Cayapas-Canandé

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 900 m	Occasional altitudinal limits	(max) 1340 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Agro-industry plantations	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion

---

Recommended citation
BirdLife International (2024) Species factsheet: Choco Poorwill Nyctiphrynus rosenbergi. Downloaded from https://datazone.birdlife.org/species/factsheet/choco-poorwill-nyctiphrynus-rosenbergi on 23/11/2024.
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 23/11/2024.