VU
Slaty-breasted Tinamou Crypturellus boucardi



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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - A3cd+4cd

Red List history
Year Category Criteria
2022 Vulnerable A3cd+4cd
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 742,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 20000-49999 poor suspected 2017
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 30-39 - - -
Decline (10 years/3 generation past and future) 30-39 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 4.99 - - -

Population justification: The population size is considered to be <50,000 mature individuals (Partners in Flight 2020), thus it is placed in the band 20,000-49,999 mature individuals.

Trend justification: The population is undergoing a significant decline owing to habitat destruction and hunting for food (Gomes et al. 2020, Partners in Flight 2020, Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). It is considered to be threatened in Mexico, with previous research showing that 50% or more of its population had been lost in the country during the last 100 years (Berlanga et al. 2010, SEMARNAT 2010). It is also currently on the Watch List of Partners of Flight (2020) and considered rare in other parts of its range (Gomez et al. 2020). In the past three generations (15 years; Bird et al. 2020), there has been an 18% loss in tree cover over the species' range (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Given the additional threat from hunting, population declines were likely to have been steeper than the rate of forest loss, therefore amounting to a population decline of 20-29% over the past three generations. In recent years, forest loss is now accelerating and the average annual rate over the past five years is equivalent to c. 31% over three generations (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). With a small additional impact suspected from hunting, which is unlikely to cease, the rate of reduction over a three generation period including both the past and the future is suspected fall between 30-39%. This rate is also suspected to apply over the future three generations.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Belize N Extant Yes
Costa Rica N Extant Yes
Guatemala N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes
Nicaragua N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mexico Calakmul
Mexico Cerro de Oro
Mexico Chimalapas
Mexico Corredor Calakmul - Sian Ka'an
Mexico El Ocote
Mexico Laguna de Mecoacán
Mexico Laguna de Términos
Mexico Montes Azules
Mexico Uxpanapa
Mexico Sur de Quintana Roo
Mexico Sian Ka'an
Mexico Sierra de Tabasco
Mexico Sierra Chixtontic, Sierra Canjá

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 700 m Occasional altitudinal limits (max) 1500 m

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
Species disturbance, 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 Declines Medium Impact: 6
Stresses
Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Species disturbance, Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent

Recommended citation
BirdLife International (2023) Species factsheet: Crypturellus boucardi. Downloaded from http://www.birdlife.org on 03/02/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/02/2023.