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Aulacorhynchus huallagae

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PICIFORMES RAMPHASTIDAE

Scientific Name: Aulacorhynchus huallagae
Species Authority: Carriker, 1933
Common Name(s):
English Yellow-browed Toucanet

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,v) ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Contributor(s): Hornbuckle, J., Mark, T. & Plenge, M.
Facilitator/Compiler(s): Benstead, P., Capper, D., Harding, M., Sharpe, C J, Symes, A.
Justification:
This species has a very small range and there are records from only two locations. Coca-growers have taken over forest within its altitudinal range, probably resulting in some reductions in this species's range and population. It is consequently classified as Endangered.

Geographic Range [top]

Range Description: Aulacorhynchus huallagae is known from only two localities in north-central Peru. It is uncommon at the type-locality in La Libertad, and apparently very rare in Río Abiseo National Park, San Martín. It has also been reported recently from Leymebambe (T. Mark in litt. 2003). It is predicted to occur to the north and south, but little of the area between the Cordillera de Colán, Amazonas, and the Carpish region, Huánuco, is accessible (Schulenberg and Parker 1997). However, it does not appear to occupy all potentially available forest, since there are no records from the relatively well-surveyed Carpish Mountains (Schulenberg and Parker 1997).

Countries:
Native:
Peru
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It has a very small range, and appears to be rather scarce. The population is estimated to number 1,000-2,499 individuals, equating to 667-1,333 mature individuals, rounded to 600-1,500 mature individuals here. This requires confirmation.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It inhabits the canopy of humid, epiphyte-laden montane forest, particularly areas with Clusia trees (Fjeldså and Krabbe 1990), at elevations of 2,000-2,600 m (Schulenberg et al. 2007). This narrow altitudinal range has been explained by the occurrence of the larger Grey-breasted Mountain-toucan Andigena hypoglauca above 2,300 m, and perhaps the smaller Emerald Toucanet Aulacorhynchus prasinus below 2,100 m. However, its restricted geographic range remains unexplained, and more recent information indicates that both the putative competitors have wider altitudinal ranges that (at least in some areas) completely encompass the known elevational range of A. huallagae (Clements and Shany 2001; J. Hornbuckle in litt. 1999).

Systems: Terrestrial

Threats [top]

Major Threat(s): The Huallaga valley, especially the upper reaches, was being taken over by coca-growers in the early 1990s, and it seems likely that forest at all elevations has suffered (M. A. Plenge in litt. 1993). Deforestation has been widespread in the region, but mainly below this species's altitudinal range. In fact, the human population within its range was higher in the post than at present (T. Mark in litt. 2010).

Conservation Actions [top]

Conservation Actions: 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 improve knowledge of its status, distribution and ecology. Assess the population within Río Abiseo National Park. Assess the likely impact of current threats. Designate further protected areas encompassing montane forests within its potential range.


Citation: BirdLife International 2012. Aulacorhynchus huallagae. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 31 October 2014.
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