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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | A3cd+4cd |
Year | Category | Criteria |
---|---|---|
2021 | Vulnerable | A3cd+4cd |
2016 | Vulnerable | B1ab(i,ii,iii,iv,v);C2a(i);D1 |
2012 | Vulnerable | B1ab(i,ii,iii,iv,v);C2a(i);D1 |
2008 | Vulnerable | B1a+b(i,ii,iii,iv,v); C2a(i) |
2004 | Vulnerable | |
2000 | Endangered | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 1,310,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 1000-15000 mature individuals | poor | suspected | 2021 |
Population trend | decreasing | poor | inferred | 2016-2039 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 15-25% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 20-38% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 18-36% | - | - | - |
Generation length | 7.68 years | - | - | - |
Number of subpopulations | 3 | - | - | - |
Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The species has been considered rare and in general there are few visual records, with records made most frequently in the Pantanal and in the Cantão State Park, Tocantins (Dornas and Pinheiro 2018). In Cantão State Park, an average abundance of 0.12 - 0.38 individuals per kilometre of river was estimated (Dornas and Pinheiro 2007). In the Paranã river valley on the border of Goiás and Tocantins, a relative abundance of c.40 individuals per 100 hours of sampling was calculated (Pacheco and Olmos 2006).
The population size has not been estimated directly. Based on a population density of 0.12 - 0.38 individuals per km2, an estimated area of forest habitat with at least 50% canopy cover of 143,600 km2 in 2020 (Global Forest Watch 2021), and assuming 10-40% of habitat within its mapped range is occupied, the population size is tentatively suspected to be within the range 1,723-21,827 individuals. This is assumed to roughly equate to 1,149-14,551 mature individuals, here rounded to 1,000 - 15,000 mature individuals.
The Brazilian Red List considers that the species has three subpopulations (Dornas and Pinheiro 2018).
Trend justification: Over 19 years from 2000-2019, approximately 17% of tree cover with at least 50% canopy cover was lost within the species's range (Global Forest Watch 2021). Extrapolating this rate over three generations (23.04 years), an estimated 20% of tree cover was lost from the species's range over the past three generations. The species's population size may not be proportionate to tree cover, especially as it is found frequently in gallery or seasonally flooded forests, which may be less affected by deforestation than dry forests. However, the species's population size may be additionally impacted by hunting. Overall, the population size is suspected to have undergone a reduction within the range of 15-25% over the past three generations.
Over four years from 2016-2019, approximately 5.4% of tree cover with at least 50% canopy cover was lost within the species's range (Global Forest Watch 2021). Assuming that the drivers of deforestation are stable, and extrapolating this rate over three generations (23.04 years), it is projected that up to 31% of tree cover may be lost from the species's range over three generations from 2016, and up to 33% may be lost over three generations from 2021. The population size is therefore suspected to undergo reductions of 18-36% over three generations from 2016, and 20-38% over three generations from 2021.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Brazil | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Brazil | Interflúvio dos Rios das Mortes e Araguaia |
Brazil | Interflúvio dos Rios Tocantins e Paranã |
Brazil | Matas Ciliares do Rio do Coco e Afluentes |
Brazil | Parque Estadual do Cantão |
Brazil | Reserva Particular do Patrimônio Natural SESC Pantanal e Entorno |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Dry | suitable | resident |
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Forest | Subtropical/Tropical Swamp | major | resident |
Savanna | Dry | suitable | resident |
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%) | Rapid Declines | Medium Impact: 7 | ||||||
|
|||||||||
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
|||||||||
Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Agriculture & aquaculture | Wood & pulp plantations - Agro-industry plantations | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
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 | ||||||
|
|||||||||
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 | ||||||
|
|||||||||
Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Energy production & mining | Renewable energy | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Chestnut-bellied Guan Penelope ochrogaster. Downloaded from
https://datazone.birdlife.org/species/factsheet/chestnut-bellied-guan-penelope-ochrogaster on 03/12/2024.
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 03/12/2024.