LC
Zimmer's Woodcreeper Dendroplex kienerii



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2024 Least Concern
2016 Near Threatened A3c
2012 Near Threatened A3c
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 1,900,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected 2017-2028
Rate of change over the past 10 years/3 generations (longer of the two periods) 1-19% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 1-19% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 1-19% - - -
Generation length 3.64 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

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.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Brazil extant native yes
Colombia extant native yes
Peru extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Swamp major resident
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable resident
Altitude 0 - 200 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation

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.