Data Zone
Justification of Red List category
This species has an extremely 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 has not been quantified, 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 the species is described as apparently fairly common to common, at least in the centre of its range (del Hoyo et al. 2003).
Trend justification
There are no data on the population trend, but declines are suspected on the basis of accelerating rates of deforestation along large rivers in the Amazon basin. This species requires undisturbed habitat for its survival and may be declining but its risk of extinction in the near future is perceived to be very low (Aleixo et al. 2023, R. Subira in litt. 2024).
Within the range, 5% of tree cover is lost over three generations (10.9 years; Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). Even though the species appears to show some tolerance of low levels of human disturbance and successional growth (Marantz et al. 2020), the population may be disproportionately affected as its riverine habitat is easily accessible and thus highly susceptible to forest loss and degradation. Precautionarily, population declines are therefore here placed in the band 1-19% over three generations.
Dendroplex kienerii occurs along the major rivers in the Amazon basin. It is distributed from north-east Peru and extreme south-east Colombia, through Brazil to the mouth of Rio Tapajós.
This species occurs below 200 m in the "várzea" (seasonally flooded forest) and "igapó" (permanently flooded forest) habitats of major Amazonian rivers. It occurs in tall forest interior as well as edge and second growth, and is often associated with the successional environments of river islands (del Hoyo et al. 2003, Marantz et al. 2020).
The primary threat to this species is accelerating deforestation in the Amazon basin, as land is cleared for agricultural production (Soares-Filho et al. 2006, Bird et al. 2011). Although probably tolerant of a certain level of disturbance because of its association with successional habitats, it is rendered particularly susceptible because of its reliance on islands and riparian forest, which are easily accessible and therefore subject to higher levels of human encroachment and logging activities (Marantz et al. 2020, Global Forest Watch 2023).
Conservation Actions Underway
It occurs in several protected areas across its range, including Anavilhanas, Viruá and Jaú National Parks, Brazil (Aleixo et al. 2023).
Conservation Actions Proposed
Survey to locate additional populations and to better delimit the distribution range. Quantify the population size. Research the species' ecology, behaviour and population structure. Research the impact of threats on the population size. 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).
21-24 cm. Medium-sized, brown woodcreeper. Has a slim body with a relatively long tail, and a short, off-white bill, which is slightly decurved. The face is streaked whitish and blackish, with a notable white supercilium and brown iris. Otherwise reddish brown above and darker brown below.
Text account compilers
Hermes, C.
Contributors
Butchart, S., Ekstrom, J., Khwaja, N., Lees, A., Symes, A. & Subirá, R.
Recommended citation
BirdLife International (2024) Species factsheet: Zimmer's Woodcreeper Dendroplex kienerii. Downloaded from
https://datazone.birdlife.org/species/factsheet/zimmers-woodcreeper-dendroplex-kienerii on 22/12/2024.
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 22/12/2024.