• 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
A3bcd	A2bcd+3bcd; C2a(i)	A2bcd+3bcd; C2a(i)

Red List history

Year	Category	Criteria
2016	Critically Endangered	A3bcd
2013	Critically Endangered	A3bcd
2012	Critically Endangered	A3bcd
2010	Critically Endangered	A3b,c,d; A4b,c,d
2009	Critically Endangered	A3b,c,d; A4b,c,d
2008	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Critically Endangered
1994	Critically Endangered
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	71,100 km2	medium
Number of locations	2-5	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1000-2499 mature individuals	medium	estimated	2016
Population trend	decreasing	poor	suspected	2000-2010
Rate of change over the past 10 years/3 generations (longer of the two periods)	50-79%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	80-100%	-	-	-
Generation length	11.5 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The population has been estimated at around 2,200 individuals, based on a population density estimate of 1.1 individuals/km² and an estimated extent of remaining habitat of 2,000km² (Renjifo et al. 2016). This roughly equates to 1,467 mature individuals, placed here in the band 1,000-2,499 mature individuals.

Trend justification: This species has declined dramatically owing to habitat loss and hunting pressure. Given that protection is inadequate throughout the majority of its restricted range (even within protected areas), very rapid declines are suspected to be ongoing. An estimated 7.84% of forest within the species's range was lost between 2000 and 2010 (Renjifo et al. 2016), which is equivalent to a 25% reduction across three generations, but the rate of population decline was likely to have been higher than this due to hunting. It is projected that the species could undergo an extremely rapid population reduction in the future given increased access and hunting. The past reduction is therefore placed in the band 50-79% and the future reduction is placed in the band 80-100%.

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

Country/Territory	IBA Name
Colombia	Cañón del Río Alicante
Colombia	Eco-parque Los Besotes
Colombia	Parque Nacional Natural Tayrona
Colombia	Reserva Regional Bajo Cauca Nechí
Colombia	Serranía de las Quinchas
Colombia	Serranía de los Yariguíes
Colombia	Serranía de San Lucas
Colombia	Valle de San Salvador
Colombia	Valle del Río Frío

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 1200 m	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
		Past, Unlikely to Return		Majority (50-90%)		Rapid Declines		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Slow, Significant Declines		Medium Impact: 7
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small 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		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Pollution	Agricultural & forestry effluents - Type Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Past, Likely to Return		Minority (<50%)		Slow, Significant Declines		Past Impact
		Stresses Ecosystem degradation
Residential & commercial development	Commercial & industrial areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Blue-billed Curassow Crax alberti. Downloaded from https://datazone.birdlife.org/species/factsheet/blue-billed-curassow-crax-alberti 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.