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Thick-billed Parrot Rhynchopsitta pachyrhyncha

IUCN Red List Criteria

Critically Endangered  
Endangered A2cd+3cd+4cd;C2a(ii) 
Vulnerable C2a(ii) 

IUCN Red List history

Year Category
2013 Endangered
2012 Endangered
2008 Endangered
2007 Endangered
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Threatened

Species attributes

Migratory status nomadic Forest dependency High
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 600 medium
Extent of Occurrence non-breeding (km2) 170,000 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 2000-2800 medium Estimated 2004
Population trend Decreasing poor -
Number of subpopulations 1 - - -
Largest subpopulation 2000-2800 - - -
Generation length (yrs) 11.1 - - -
Population justification: In 2004, the population was thought to number 3,000-6,000 individuals. The are possibly c.2,800 mature individuals, derived from the statement by Ortiz Maciel and Cruz Nieto (2004) that an estimate of up to 140 nests in the Bisaloachic-Cebadillas region represented c.10% of the total known breeding population. Thus the number of mature individuals is assumed to fall within the range 2,000-2,800. However, these figures may represent an over-estimate, as not all of the nest cavities surveyed are used every year (M. A. Cruz-Nieto et al. in litt. 2007); there may even be fewer than 100 active nests each year (J. Gilardi in litt. 2010).
Trend justification: The species's population is suspected to be declining rapidly, in line with the clearance and degradation of its habitat.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Mexico Native Extant       Yes
USA Reintroduced Extant       Yes

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane suitable resident
Forest Temperate suitable resident
Altitude 2000 - 2700 m Occasional altitudinal limits 1200 - 3600 m

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 Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Decline 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 Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Reduced reproductive success, Species mortality
Biological resource use Logging & wood harvesting / Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Rapid Declines High Impact: 8
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Fire & fire suppression / Trend Unknown/Unrecorded Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Slow, Significant Decline Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Rhynchopsitta pachyrhyncha. Downloaded from http://www.birdlife.org on 28/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/12/2014.

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 Endangered
Family Psittacidae (Parrots)
Species name author (Swainson, 1827)
Population size 2000-2800 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 600 km2
Country endemic? No
Links to further information
- Summary information on this species