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Sickle-winged Nightjar Eleothreptus anomalus

IUCN Red List Criteria

Near Threatened (criteria nearly met) A2c+3c+4c;C1 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Threatened

Species attributes

Migratory status full migrant Forest dependency Low
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 910,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 6700 poor Suspected 2007
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 5.4 - - -
Population justification: The population is preliminarily estimated to number at least 10,000 individuals, roughly equating to 6,700 mature individuals. This requires confirmation.
Trend justification: A moderately rapid and on-going population decline is suspected owing to habitat loss and degradation.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Argentina Native Extant Yes      
Brazil Native Extant Yes      
Paraguay Native Extant Yes      
Uruguay Native Extant        

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Argentina Bañado La Estrella Este site factsheet
Argentina Barra Concepción site factsheet
Argentina Concepción-Chavarría site factsheet
Argentina Estancia Puerto Valle site factsheet
Argentina Estancia San Juan Poriahú site factsheet
Argentina Estero Tapenagá site factsheet
Argentina Estero Valenzuela site factsheet
Argentina Fortín Sargento Primero Leyes site factsheet
Argentina Nacientes de los riachos Monte Lindo y Tatú Piré site factsheet
Argentina Nandubaysal-El Potrero site factsheet
Argentina Parque Nacional El Palmar site factsheet
Argentina Parque Nacional Mburucuyá site factsheet
Argentina Parque Nacional Pre-Delta site factsheet
Argentina Parque Nacional Río Pilcomayo site factsheet
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita site factsheet
Argentina Reserva Natural Rincón de Santa María site factsheet
Argentina Riacho He He site factsheet
Argentina Valle del río Paraguay-Paraná site factsheet
Argentina Valle Fluvial del Río Paraguay site factsheet
Argentina Yuto y Vinalito site factsheet
Brazil Banhado dos Pachecos site factsheet
Brazil Campos de Água Doce e Palmas site factsheet
Brazil Campos Gerais do Paraná site factsheet
Brazil Cânion do Guartelá site factsheet
Brazil Jaguariaíva site factsheet
Brazil Parque Nacional de Brasília site factsheet
Brazil Serra da Canastra site factsheet
Brazil Várzeas da Região Metropolitana de Curitiba site factsheet
Paraguay Parque Nacional San Rafael site factsheet
Paraguay Tapyta site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland suitable breeding
Forest Subtropical/Tropical Moist Lowland suitable non-breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Savanna Dry suitable breeding
Savanna Dry suitable non-breeding
Savanna Moist suitable breeding
Savanna Moist suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable non-breeding
Altitude 0 - 1100 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Agriculture & aquaculture Livestock farming & ranching / Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations / Agro-industry plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Fire & fire suppression / Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Natural system modifications Other ecosystem modifications Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Pollution Agricultural & forestry effluents / Type Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Eleothreptus anomalus. Downloaded from http://www.birdlife.org on 23/11/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/11/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Near Threatened
Family Caprimulgidae (Nightjars)
Species name author (Gould, 1838)
Population size 6700 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 910,000 km2
Country endemic? No
Links to further information
- Summary information on this species