• 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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
SACC. 2006. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
SACC. 2006. 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
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2006	Near Threatened
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Migratory status	full migrant	Forest dependency	does not normally occur in forest
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3,440,000 km2	medium
Extent of Occurrence (non-breeding)	6,410,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	medium	estimated	2006
Population trend	decreasing	medium	estimated	1998-2008
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	10.1 years	-	-	-

Population justification: Continental populations were thought to be declining by 2% per year between 1980 and 1996 (equivalent to 16% in ten years) (AOU 1998, Hill 1998); however data from the North American Breeding Bird Survey indicate that these figures were incorrect and in fact annual declines at a rate of 0.6% between 1980 and 2006 are more realistic (Morrison et al. 2006). This equates to a decline of just 5.8% over a ten year period. However, it appears that there are considerably more Long-billed Curlews than previously thought, with a likely global population in the order of 50,000-123,000, based on recent assessments, expert opinion and statistically based surveys (Wetlands International 2006).

Trend justification: This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Antigua and Barbuda	extant	vagrant
Barbados	extant	vagrant
Belize	extant	vagrant			yes
Canada	extant	native		yes
Costa Rica	extant	native			yes
Cuba	extant	vagrant
El Salvador	extant	native			yes
French Guiana	extant	vagrant
Guadeloupe (to France)	extant	vagrant				yes
Guatemala	extant	native			yes
Honduras	extant	native			yes
Jamaica	extant	vagrant
Mexico	extant	native			yes
Panama	extant	vagrant
Peru	extant	uncertain
Puerto Rico (to USA)	extant	vagrant
St Vincent and the Grenadines	extant	vagrant
Trinidad and Tobago	extant	vagrant
USA	extant	native		yes
Venezuela	extant	native			yes
Virgin Islands (to USA)	extant	vagrant

Country/Territory	IBA Name
Mexico	Área de San Quintín
Mexico	Bahía Magdalena-Almejas
Mexico	Complejo Lagunar Ojo de Liebre
Mexico	Complejo Lagunar San Ignacio
Mexico	Cuatro Ciénegas
Mexico	Delta del Río Colorado
Mexico	El Manantial
Mexico	Laguna de Bustillos
Mexico	Pradera de Tokio
Mexico	Presa el Tulillo
Mexico	Presa Venustiano Carranza
USA	Imperial Valley

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Temperate	major	breeding
Marine Intertidal	Mud Flats and Salt Flats	major	non-breeding
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	suitable	non-breeding
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	suitable	non-breeding
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species mortality
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Long-billed Curlew Numenius americanus. Downloaded from https://datazone.birdlife.org/species/factsheet/long-billed-curlew-numenius-americanus on 23/12/2024.
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 23/12/2024.