Data Zone
Justification of Red List category
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Population justification
The global population size has not been quantified, but density descriptions range from uncommon to fairly common (Stotz et al. 1996, Schulenberg and Johnson 2020).
Based on the population density of a congener (L. amaurocephalus in Peru: 5 mature individuals/km2; Santini et al. 2018), and, to account for the species' apparently localised distribution (see eBird 2023) under the precautionary assumption that only 10% of the mapped range is occupied (i.e., 6,500 km2), the global population may number 32,500 mature individuals. To account for uncertainty, the population is here placed in the band 20,000-49,999 mature individuals.
Trend justification
The population trend has not been directly investigated, but due to the species' forest dependence, declines are suspected to be linked to forest cover loss.
Tree cover loss within the range is very low (2% over ten years; Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Population declines are therefore likely equally low and localised; they are here tentatively placed in the band 1-9% over ten years.
Leptopogon taczanowskii is endemic to the east Andes of Peru. It ranges from Amazonas and San Martín south of the río Marañón southwards as far as Cusco.
It occurs in the understory of humid montane and cloud forest (del Hoyo et al. 2004, Schulenberg and Johnson 2020). It is occasionally found at forest edges or in secondary growth (del Hoyo et al. 2004). It feeds on insects, but its ecology is otherwise not well known (Schulenberg and Johnson 2020).
Due to its reliance on forest understory, it is susceptible to the loss, degradation and fragmentation of montane forests within the range (Schulenberg and Johnson 2020). Deforestation is driven by forest conversion for cultivation and pasture (del Hoyo et al. 2004); however overall the rate of tree cover loss is currently very low and vast areas of pristine forests remain (Global Forest Watch 2022).
Conservation Actions Underway
The species occurs within several protected areas across its range, including Río Abiseo and Yanachaga-Chemillén National Parks.
Conservation Actions Proposed
Survey to locate additional populations and to accurately quantify the population size. Research the species' ecology and behaviour. Monitor the population trend. Monitor rates of habitat loss.
Expand the protected area network to effectively protect key sites. Effectively manage protected areas, utilising emerging opportunities to finance protected area management with the joint aims of reducing carbon emissions and maximizing biodiversity conservation. Incentivise conservation on private lands through expanding market pressures for sound land management and preventing forest clearance on lands unsuitable for agriculture (Soares-Filho et al. 2006)
13 cm. Smallish, green-and-yellow flycatcher. Mainly olive above, with some black and cinnamon on the wings. Mainly yellow below, but breast is dark buffy olive fading up to a grey throat, whitish face and grey crown.
Text account compilers
Hermes, C.
Contributors
Butchart, S., Ekstrom, J., Khwaja, N. & Symes, A.
Recommended citation
BirdLife International (2024) Species factsheet: Inca Flycatcher Leptopogon taczanowskii. Downloaded from
https://datazone.birdlife.org/species/factsheet/inca-flycatcher-leptopogon-taczanowskii 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.