• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Justification of Red List category
Though being known from only a very small area, habitat loss within the range is very low. The species is listed as Near Threatened, but large areas of pristine habitat remain nearby, and thus the distribution range and population may be larger than assumed.

Population justification
The population size has not been quantified, but the species appears to be rather scarce (per eBird 2023). Based on the very small range, the population is precautionarily suspected to number less than 10,000 mature individuals, but an accurate estimate of the population size is urgently required.

Trend justification
The population trend has not been investigated, but the species at present appears secure and not under imminent risk. Tree cover loss is very low within the range (1% over three generations) and vast areas of pristine forest remain near occupied sites (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Despite the species' strong dependence on dense montane forests, this low rate of habitat loss is currently not thought to affect the population. It is therefore suspected to be stable.

Aulacorhynchus huallagae is known from a small number of localities in north-central Peru from southern Amazonas to Río Abiseo National Park, San Martín. Its distribution range may however be larger than currently known, but little of the area between the Cordillera de Colán, Amazonas, and the Carpish region, Huánuco, is accessible (Schulenberg and Parker 1997, Schulenberg 2020).

It inhabits the canopy of humid, epiphyte-laden montane forest, particularly areas with Clusia trees (Fjeldså and Krabbe 1990), at elevations of 2,000-2,750 m.

Due to its dependence on humid montane forests, the species is potentially at risk of habitat destruction and degradation. Nevertheless, tree cover loss is currently very low within the known range and large areas of suitable habitat remain (Global Forest Watch 2022).

Conservation Actions Underway
It occurs within the extensive Río Abiseo National Park, but the population in this reserve may be small.

Conservation Actions Proposed
Survey to locate additional populations and to refine the distribution range. Quantify the population size. Research its ecology. Assess the impact of potential threats. Monitor the population trend. Designate further protected areas encompassing montane forests within its potential range.

37-41 cm. All-green toucanet with distinctive short yellow line behind eye and blue breast-band. Blue-grey bill with narrow white line at base and white throat. Central tail feathers tipped chestnut and yellow undertail-coverts. Similar spp. Other principally all-green toucanets have different bill patterns and lack yellow eyebrow. Voice A monotonously repeated short, dry rattling cuah cuah cuah. Approx. 2/sec.

Text account compilers
Hermes, C.

Contributors
Benstead, P., Capper, D., Harding, M., Hornbuckle, J., Mark, T., Plenge, M.A., Sharpe, C.J. & Symes, A.

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Recommended citation
BirdLife International (2024) Species factsheet: Yellow-browed Toucanet Aulacorhynchus huallagae. Downloaded from https://datazone.birdlife.org/species/factsheet/yellow-browed-toucanet-aulacorhynchus-huallagae 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.