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 |
high |
Land-mass type |
continent
|
Average mass |
- |
Population justification: The species is described as uncommon to locally common (Stotz et al. 1996, Short and Kirwan 2020). In Colombia, densities of 4.6-8.8 individuals/km2 could be observed (Renjifo et al. 2014 and references therein), though this may be an overestimate (E. Botero-Delgadillo in litt. 2023). Assuming that these densities are representative for the entire range, and assuming that only 25% of forests within the range are occupied to account for the species' apparent rarity and localised occurrence (i.e., 8,000-13,000 km2; Global Forest Watch 2022), the global population may number c.36,800-114,400 individuals. This roughly equates to 25,000-77,000 mature individuals.
Trend justification: The population trend has not been investigated, but it is feared that the species is undergoing a decline as a consequence of habitat loss and fragmentation. It is reportedly rarer in secondary forests and plantations than in mature forests (Renjifo et al. 2014).
Over three generations (16.9 years), 2% of tree cover is lost within the range (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Rates of forest loss can however be locally higher, and habitat continues to be degraded and fragmented (Short and Kirwan 2020). Moreover, similar to its congener A. laminirostris, it may depend on tall trees and standing deadwood for nesting sites (per Short and Sharpe 2020) so that the population is disproportionately affected by habitat loss and selective logging. Nevertheless, most deforestation is happening below the species' altitudinal range, and high-elevation forests currently appear at low risk (Short and Kirwan 2020, Global Forest Watch 2022).
It cannot be ruled out that the species is locally hunted, though its impact, if at all, is unlikely to be major (per Renjifo et al. 2014). Consequently, a slow population decline is suspected, which is here tentatively placed in the band 1-19% over three generations.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Grey-breasted Mountain-toucan Andigena hypoglauca. Downloaded from
https://datazone.birdlife.org/species/factsheet/grey-breasted-mountain-toucan-andigena-hypoglauca on 23/12/2024.
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 23/12/2024.