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Location Angola, Cuanza Sul
Central coordinates 14o 51.00' East  11o 55.00' South
IBA criteria A1, A2, A3
Area 2,000 ha
Altitude 1,300 m
Year of IBA assessment 2001





Site description The site lies to the west of Mount Moco and Mount Soque, near the Cuanza Sul/Huambo provincial border, and is a mosaic of rugged, rocky hills, montane grassland, woodland and forest patches and bare open granites. No rainfall data are available for the site, but rainfall at two localities fairly close-by exceeds 1,500 mm per year. In general, the available habitats for birds and the vegetation are similar to those at Mount Moco, but the forest patches are smaller. Dominant trees in the remnant forest patches include Podocarpus, Polyscias, Apodytes, Pittosporum, Szygium and Halleria, with generally low canopies. Short grasslands with scattered trees and shrubs occur on the hills. Tree and shrub genera include Protea, Cliffortia, Phillipia, Cyathea, Stoebe and Lobelia.

Key Biodiversity See Box and Tables 2 and 3 for key species. The site qualifies for its assemblage of species characteristic of the Afrotropical Highlands and Zambezian biomes, but the area seems to lack the avifaunal richness of the inselbergs further east (although this may be due to less intensive sampling). Only 130 bird species have been recorded from the site, and many of the records date back to the 1920s and early 1930s, when an expedition from the American Museum of Natural History and the Lynes-Vincent tour collected there. Grus carunculatus is an uncommon resident, and probably breeds. The site is important as one of the few localities where Ploceus nigrimentum occurs—there is no information available on the current abundance and status of this species, but it probably breeds. Two restricted-range species, Dioptrornis brunneus and Nectarinia ludovicensis, are frequent and probably breed. Four species of the Guinea–Congo Forests biome also occur at the site, three of them being either uncommon or fairly localized in Angola: Francolinus finschi, Gymnobucco calvus and Phyllastrephus fulviventris. Species at the site that are part of isolated populations in Angola include Columba arquatrix, Anthus lineiventris, Sheppardia bocagei, Myrmecocichla tholloni, M. nigra, Apalis cinerea, Calamonastes undosus and Muscicapa adusta. Several cisticolas that appear to have isolated populations in this area include Cisticola aberrans, C. lais, C. robustus and C. ayresii. Euplectes gierowi has been collected at Cahata, c.50 km due south of Mombolo, and could occur in wet grassland below the forest patches and in valley bottoms in the Mombolo–Cassongue–Galanga area.

Non-bird biodiversity: None known to BirdLife International.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Lybius minor resident  1998  present  A3  Not Recognised 
Western Green Tinkerbird Pogoniulus coryphaea resident  1998  present  A3  Least Concern 
Miombo Pied Barbet Tricholaema frontata resident  1998  present  A3  Least Concern 
Wattled Crane Bugeranus carunculatus resident  uncommon  A1  Vulnerable 
Red-backed Mousebird Colius castanotus resident  1998  present  A3  Least Concern 
Pale-billed Hornbill Lophoceros pallidirostris resident  1998  present  A3  Least Concern 
Black-and-rufous Swallow Hirundo nigrorufa resident  1998  present  A3  Least Concern 
Angola Lark Mirafra angolensis resident  1998  present  A3  Least Concern 
Miombo Wren-warbler Camaroptera undosa resident  1998  present  A3  Least Concern 
Sharp-tailed Glossy-starling Lamprotornis acuticaudus resident  1998  present  A3  Least Concern 
Miombo Rock-thrush Monticola angolensis resident  1998  present  A3  Least Concern 
Angola Slaty Flycatcher Dioptrornis brunneus resident  1998  present  A2, A3  Least Concern 
Bannerman's Sunbird Nectarinia bannermani resident  1998  present  A3  Least Concern 
Bocage's Sunbird Nectarinia bocagii resident  1998  present  A3  Least Concern 
Bronze Sunbird Nectarinia kilimensis resident  1998  present  A3  Least Concern 
Black-chinned Weaver Ploceus nigrimentus resident  present  A1  Least Concern 
Dusky Twinspot Euschistospiza cinereovinacea resident  1998  present  A3  Least Concern 
Swee Waxbill Estrilda melanotis resident  1998  present  A3  Least Concern 
Fuelleborn's Longclaw Macronyx fuellebornii resident  1998  present  A3  Least Concern 

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest   99%

Land use

Land-use Extent (% of site)
agriculture -
forestry -
other -
Notes: Firewood collection.

References Lynes and Sclater (1933–1934).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Mombolo (Missão da Namba). Downloaded from http://www.birdlife.org on 23/11/2014

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