Current view: Data table and detailed info
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.
IUCN Red List criteria met and history
Red List criteria met
Red List history
| Migratory status |
not a migrant |
Forest dependency |
medium |
| Land-mass type |
|
Average mass |
- |
Population justification: It is fairly common in parts of its range, but has been extirpated or declined in other areas (del Hoyo and Kirwan 2020). Surveys in 2011-2012 in the Araripe National Forest, Ceará, Brazil found a population density of 19.17 individuals/km2 (14.55-25.48; Thel et al. 2015). Surveys in the Atlantic Forest in Espírito Santo, Brazil produced an estimated density of 15 individuals per km2 (Pereira-Ribeiro et al. 2018).
Based on the above population densities, an estimated area of habitat in 2010 of 2,841,000 km2 and assuming between 10 and 40% of habitat is occupied, the population size is tentatively suspected to fall within the range 4,000,000 - 29,000,000 individuals, roughly equating to 2,000,000 - 20,000,000 mature individuals. The subpopulation structure is not known, but there are four subspecies, indicating at least four subpopulations, and there are probably many more.
Trend justification: It has declined or disappeared in some parts of the range, including the area around Belém and Santarém, Pará, where it has not been recorded since the 1960s, and eastern Paraguay, where it has declined due to deforestation (del Hoyo and Kirwan 2020). The subspecies P. s. alagoensis is thought to be declining due to hunting and habitat loss (Marques et al. 2018). In Misiones, Argentina, field surveys conducted over several years up to 2021 have reported a smaller number of sightings than previous surveys, even in protected areas (C. I. Miño in litt. 2021).
Over 19 years from 2001-2020, approximately 17% of 2010 tree cover with at least 30% canopy cover was lost from within the species's range (Global Forest Watch 2021). Extrapolating over three generations into the future, it is projected that 20% of tree cover will be lost from the species's range. Based on the rate of tree cover loss that occurred over five years from 2016-2020 (Global Forest Watch 2021), it is projected that up to 23% of tree cover may be lost from the species's range over the next 19 years.
This species is tolerant of fragmentation and secondary forest (dos Anjos 2006, Loures-Ribeiro et al. 2011, del Hoyo and Kirwan 2020), so its population size may not be declining at the same rate as habitat loss. However, its abundance may also locally be impacted by hunting in parts of the range (Peres et al. 2003, Pereira-Ribeiro et al. 2018).
Assuming that rates of decline may be between 10% lower and 5% higher than the estimated rates of forest loss, the species's population size is suspected to have declined by 7-22% over the past three generations, and it is projected to decline by 10-28% over the next three generations.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Rusty-margined Guan Penelope superciliaris. Downloaded from
https://datazone.birdlife.org/species/factsheet/rusty-margined-guan-penelope-superciliaris 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.
