LC
Katanga Masked Weaver Ploceus katangae



Taxonomy

Taxonomic note
Ploceus katangae was formerly split as P. katangae and P. upembae (del Hoyo and Collar 2016), which were previously lumped as P. katangae following Sibley and Monroe (1990, 1993). However, further data needed to confirm the specific status of upembae, which was first described as a subspecies of P. velatus. Form upembae differs from katangae its pale olive-green nape merging with mantle vs yellow nape demarcated sharply from olive-green mantle by vague narrow blackish line (2); reduced black on front of head, resulting in narrower forehead and not extending around eyes (2); mantle to rump and wing-coverts plain yellowish olive-green, without blackish streaks and edgings (2); females and eclipse males dorsally washed olive vs warm brownish (Louette 1987) (ns1); larger bill (8.4–8.7 mm vs 7–7.6 deeper, 6.5–7.1 vs 5.5–5.9 wider and 18 vs 17.2 longer (Louette 1987); allow 2). In the past often considered conspecific with P. velatus, P. ruweti, P. reichardi and P. vitellinus. Two subspecies recognised.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2023. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 8. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v8_Dec23.zip.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2023 Least Concern
2016 Not Recognised
2012 Least Concern
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 does not normally occur in forest
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 212,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend unknown - - -
Generation length 3.26 years - - -
Number of subpopulations 2-10,3 - - -
Percentage of mature individuals in largest subpopulation 1-89% - - -

Population justification: This is a poorly known species and no population estimates are available. It remains relatively easy to encounter at known sites such as Bengweulu (eBird 2023), though does not congregate in large numbers. The area of apparently suitable habitat for the species is large and very poorly surveyed, suggesting that the population is unlikely to be small despite the restricted range. There is no evidence that the area of suitable habitat has reduced significantly at known sites, many of which are protected. Given the lack of information available the population size is considered unknown.

Trend justification: At the known sites for the species habitat extent appears to be largely unchanged over at least several decades and there do not seem to be direct threats operating that may be driving population reductions. However, given the lack of information from Upemba and low level of coverage elsewhere in the range the current population trend is considered unknown, but is not suspected to be suffering a rapid reduction.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Congo, The Democratic Republic of the extant native yes
Zambia extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Zambia Bangweulu Swamps
Zambia Luapula Mouth
Zambia Mweru Wantipa National Park
Zambia Sumbu National Park and Tondwa Game Management Area

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry suitable non-breeding
Savanna Dry suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Altitude 500 - 1500 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Katanga Masked Weaver Ploceus katangae. Downloaded from https://datazone.birdlife.org/species/factsheet/katanga-masked-weaver-ploceus-katangae on 22/11/2024.
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 22/11/2024.