EN
Red-billed Curassow Crax blumenbachii



Taxonomy

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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- B1ab(i,ii,iii,v);C2a(i);D B1ab(i,ii,iii,v);C2a(i);D1+2

Red List history
Year Category Criteria
2016 Endangered B1ab(i,ii,iii,v);C2a(i);D
2013 Endangered B1ab(i,ii,iii,v);C2a(i);D
2012 Endangered B1ab(i,ii,iii,v);C2a(i);D
2008 Endangered B1a+b(i,ii,iii,v); C2a(i); D1
2004 Endangered
2000 Endangered
1996 Critically Endangered
1994 Critically Endangered
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 77,400 medium
Number of locations 4 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 130-170 medium estimated 2003
Population trend Decreasing poor estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-9 - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 11.5 - - -

Population justification: Minimum estimates of the species's population are 60 birds in Sooretama Biological Reserve, 100 in Rio Doce State Park and 35 in Descobrimento National Park, and c.20 individuals in the Michelin Ecological Reserve, Bahia (K. M. Flesher in litt. 2011) with recent sightings of small numbers at five other sites in 2003. It is likely to number 200-249 individuals in total, roughly equating to 130-170 mature individuals.

Trend justification: Although the population is expected to be increasing in some locations (mainly Michelin Ecological Reserve, Bahia [K. M. Flesher in litt. 2012]), overall a population decline of 1-9% over the last ten years is suspected based on rates of habitat loss and degradation, and hunting pressure.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Brazil N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Brazil Baixo-Sul
Brazil Parque Estadual do Rio Doce
Brazil Parque Nacional de Monte Pascoal
Brazil Parque Nacional do Descobrimento
Brazil Sooretama / Linhares
Brazil Una

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest marginal resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Swamp marginal resident
Altitude 0 - 500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Past, Unlikely to Return Whole (>90%) Slow, Significant Declines Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
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

Recommended citation
BirdLife International (2020) Species factsheet: Crax blumenbachii. Downloaded from http://www.birdlife.org on 30/03/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/03/2020.