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Location Congo, Kouilou
Central coordinates 11o 55.00' East  4o 25.00' South
IBA criteria A1, A2, A3
Area 160,000 ha
Altitude 0 - 130m
Year of IBA assessment 2001





Site description The basin of the lower Kouilou river, lying a little to the west of Dimonika (CG004), is bordered to the south-west by the Atlantic coast, between Diosso and Madingo–Kayes, to the north-west and north by the road from Madingo–Kayes to Nkola and Magne, and to the east by the Lakes Kitina and Titina. The main part of the site is occupied by the 900 km² marsh of the Kouilou basin, which includes 15 km² of Rhizophora mangrove, 20 km² of lakes, 65 km² of papyrus (pure or mixed with low shrubs), 30 km² of wet Jardinea grassland, c.170 km² of flooded thickets (mainly Raphia, Pandanus, Ficus trichopoda) and c.600 km² of permanently or seasonally flooded forest (Chrysobalanus, Ctenolophon, Sacoglottis, Uapaca). The coastal strip is occupied by sandy beaches, evergreen thickets and dry evergreen Symphonia forest (in gorges), giving way to a forest-savanna mosaic further inland—with c.100 km² of dry Andropogon grassland. Semi-evergreen rainforest, from this mosaic to the foothills of the Mayombe, covers c.500 km². Most of the villages are located along the coast and the Madingo–Kayes road; there is also a cluster of fishing villages in the vicinity of Lake Nanga and small fishing camps on the Kouilou. The dryland forests are all exploited by selective logging. A large proportion of the grassland is being planted with Eucalyptus, an operation financed by Shell.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Plumed Guineafowl Guttera plumifera resident  1999  present  A3  Least Concern 
Forest Francolin Francolinus lathami resident  1999  present  A3  Least Concern 
Spot-breasted Ibis Bostrychia rara resident  1999  present  A3  Least Concern 
White-crested Tiger-heron Tigriornis leucolopha resident  1999  present  A3  Least Concern 
Congo Serpent-eagle Dryotriorchis spectabilis resident  1999  present  A3  Least Concern 
Red-thighed Sparrowhawk Accipiter erythropus resident  1999  present  A3  Least Concern 
Long-tailed Hawk Urotriorchis macrourus resident  1999  present  A3  Least Concern 
Cassin's Hawk-eagle Aquila africanus resident  1999  present  A3  Least Concern 
White-spotted Flufftail Sarothrura pulchra resident  1999  present  A3  Least Concern 
Nkulengu Rail Himantornis haematopus resident  1999  present  A3  Least Concern 
Grey-throated Rail Canirallus oculeus resident  1999  present  A3  Least Concern 
Damara Tern Sterna balaenarum winter  present  A1  Near Threatened 
Afep Pigeon Columba unicincta resident  1999  present  A3  Least Concern 
Western Bronze-naped Pigeon Columba iriditorques resident  1999  present  A3  Least Concern 
Blue-headed Wood-dove Turtur brehmeri resident  1999  present  A3  Least Concern 
Psittacus erithacus resident  1999  present  A3  Not Recognised 
Guinea Turaco Tauraco persa resident  1999  present  A3  Least Concern 
Yellow-billed Turaco Tauraco macrorhynchus resident  1999  present  A3  Least Concern 
Olive Long-tailed Cuckoo Cercococcyx olivinus resident  1999  present  A3  Least Concern 
Yellow-throated Cuckoo Chrysococcyx flavigularis resident  1999  present  A3  Least Concern 
Gabon Coucal Centropus anselli resident  1999  present  A3  Least Concern 
Fraser's Eagle-owl Bubo poensis resident  1999  present  A3  Least Concern 
Akun Eagle-owl Bubo leucostictus resident  1999  present  A3  Least Concern 
Vermiculated Fishing-owl Scotopelia bouvieri resident  1999  present  A3  Least Concern 
Maned Owl Jubula lettii resident  1999  present  A3  Data Deficient 
Red-chested Owlet Glaucidium tephronotum resident  1999  present  A3  Least Concern 
Bates's Nightjar Caprimulgus batesi resident  1999  present  A3  Least Concern 
Sabine's Spinetail Rhaphidura sabini resident  1999  present  A3  Least Concern 
Cassin's Spinetail Neafrapus cassini resident  1999  present  A3  Least Concern 
Bare-cheeked Trogon Apaloderma aequatoriale resident  1999  present  A3  Least Concern 
Blue-throated Roller Eurystomus gularis resident  1999  present  A3  Least Concern 
Chocolate-backed Kingfisher Halcyon badia resident  1999  present  A3  Least Concern 
African Dwarf-kingfisher Ceyx lecontei resident  1999  present  A3  Least Concern 
White-bellied Kingfisher Alcedo leucogaster resident  1999  present  A3  Least Concern 
Black Bee-eater Merops gularis resident  1999  present  A3  Least Concern 
Black-headed Bee-eater Merops breweri resident  1999  present  A3  Least Concern 
Rosy Bee-eater Merops malimbicus breeding  1999  unknown  A3  Least Concern 
Black Dwarf Hornbill Tockus hartlaubi resident  1999  present  A3  Least Concern 
Red-billed Dwarf Hornbill Tockus camurus resident  1999  present  A3  Least Concern 
African Pied Hornbill Tockus fasciatus resident  1999  present  A3  Least Concern 
White-crested Hornbill Tropicranus albocristatus resident  1999  present  A3  Least Concern 
Piping Hornbill Bycanistes fistulator resident  1999  present  A3  Least Concern 
Black-casqued Hornbill Ceratogymna atrata resident  1999  present  A3  Least Concern 
Naked-faced Barbet Gymnobucco calvus resident  1999  present  A3  Least Concern 
Speckled Tinkerbird Pogoniulus scolopaceus resident  1999  present  A3  Least Concern 
Red-rumped Tinkerbird Pogoniulus atroflavus resident  1999  present  A3  Least Concern 
Yellow-throated Tinkerbird Pogoniulus subsulphureus resident  1999  present  A3  Least Concern 
Yellow-spotted Barbet Buccanodon duchaillui resident  1999  present  A3  Least Concern 
Hairy-breasted Barbet Tricholaema hirsuta resident  1999  present  A3  Least Concern 
Yellow-billed Barbet Trachyphonus purpuratus resident  1999  present  A3  Least Concern 
African Piculet Sasia africana resident  1999  present  A3  Least Concern 
Buff-spotted Woodpecker Campethera nivosa resident  1999  present  A3  Least Concern 
Brown-eared Woodpecker Campethera caroli resident  1999  present  A3  Least Concern 
Gabon Woodpecker Dendropicos gabonensis resident  1999  present  A3  Least Concern 
Golden-crowned Woodpecker Thripias xantholophus resident  1999  present  A3  Least Concern 
Rufous-sided Broadbill Smithornis rufolateralis resident  1999  present  A3  Least Concern 
Chestnut Wattle-eye Platysteira castanea resident  1999  present  A3  Least Concern 
Chestnut-bellied Helmet-shrike Prionops caniceps resident  1999  present  A3  Least Concern 
Red-eyed Puffback Dryoscopus senegalensis resident  1999  present  A3  Least Concern 
Large-billed Puffback Dryoscopus sabini resident  1999  present  A3  Least Concern 
Sooty Boubou Laniarius leucorhynchus resident  1999  present  A3  Least Concern 
Blue Cuckooshrike Coracina azurea resident  1999  present  A3  Least Concern 
Petit's Cuckooshrike Campephaga petiti resident  1999  present  A3  Least Concern 
Western Black-headed Oriole Oriolus brachyrhynchus resident  1999  present  A3  Least Concern 
Black-winged Oriole Oriolus nigripennis resident  1999  present  A3  Least Concern 
Shining Drongo Dicrurus atripennis resident  1999  present  A3  Least Concern 
Black-headed Paradise-flycatcher Terpsiphone rufiventer resident  1999  present  A3  Least Concern 
Blue-headed Crested-flycatcher Trochocercus nitens resident  1999  present  A3  Least Concern 
Rufous-vented Paradise-flycatcher Terpsiphone rufocinerea resident  1999  present  A3  Least Concern 
Chestnut-capped Flycatcher Erythrocercus mccallii resident  1999  present  A3  Least Concern 
Forest Penduline-tit Anthoscopus flavifrons resident  1999  present  A3  Least Concern 
African River-martin Pseudochelidon eurystomina winter  1999  common  A3  Data Deficient 
Square-tailed Saw-wing Psalidoprocne nitens resident  1999  present  A3  Least Concern 
White-throated Blue Swallow Hirundo nigrita resident  1999  present  A3  Least Concern 
Apalis rufogularis resident  1999  present  A3  Not Recognised 
Yellow-browed Camaroptera Camaroptera superciliaris resident  1999  present  A3  Least Concern 
Olive-green Camaroptera Camaroptera chloronota resident  1999  present  A3  Least Concern 
Grey Greenbul Andropadus gracilis resident  1999  present  A3  Least Concern 
Plain Greenbul Andropadus curvirostris resident  1999  present  A3  Least Concern 
Golden Greenbul Calyptocichla serina resident  1999  present  A3  Least Concern 
Honeyguide Greenbul Baeopogon indicator resident  1999  present  A3  Least Concern 
White-tailed Greenbul Baeopogon clamans resident  1999  present  A3  Least Concern 
Spotted Greenbul Ixonotus guttatus resident  1999  present  A3  Least Concern 
Simple Greenbul Chlorocichla simplex resident  1999  present  A3  Least Concern 
Swamp Greenbul Thescelocichla leucopleura resident  1999  present  A3  Least Concern 
Leaf-love Pyrrhurus scandens resident  1999  present  A3  Least Concern 
Icterine Greenbul Phyllastrephus icterinus resident  1999  present  A3  Least Concern 
Common Bristlebill Bleda syndactylus resident  1999  present  A3  Least Concern 
Lesser Bristlebill Bleda notatus resident  1999  present  A3  Least Concern 
Green-backed Bulbul Criniger chloronotus resident  1999  present  A3  Least Concern 
Red-tailed Bulbul Criniger calurus resident  1999  present  A3  Least Concern 
White-bearded Bulbul Criniger ndussumensis resident  1999  present  A3  Least Concern 
Yellow-spotted Nicator Nicator chloris resident  1999  present  A3  Least Concern 
Yellow-throated Nicator Nicator vireo resident  1999  present  A3  Least Concern 
Yellow Longbill Macrosphenus flavicans resident  1999  present  A3  Least Concern 
Grey Longbill Macrosphenus concolor resident  1999  present  A3  Least Concern 
Green Hylia Hylia prasina resident  1999  present  A3  Least Concern 
Rufous-crowned Eremomela Eremomela badiceps resident  1999  present  A3  Least Concern 
Green Crombec Sylvietta virens resident  1999  present  A3  Least Concern 
Lemon-bellied Crombec Sylvietta denti resident  1999  present  A3  Least Concern 
Blackcap Illadopsis Illadopsis cleaveri resident  1999  present  A3  Least Concern 
Brown Illadopsis Illadopsis fulvescens resident  1999  present  A3  Least Concern 
Purple-headed Glossy-starling Lamprotornis purpureiceps resident  1999  present  A3  Least Concern 
Chestnut-winged Starling Onychognathus fulgidus resident  1999  present  A3  Least Concern 
White-tailed Ant-thrush Neocossyphus poensis resident  1999  present  A3  Least Concern 
Rufous Flycatcher-thrush Stizorhina fraseri resident  1999  present  A3  Least Concern 
Alethe diademata resident  1999  present  A3  Not Recognised 
Forest Robin Stiphrornis erythrothorax resident  1999  present  A3  Least Concern 
Lowland Akalat Sheppardia cyornithopsis resident  1999  present  A3  Least Concern 
African Forest Flycatcher Fraseria ocreata resident  1999  present  A3  Least Concern 
White-browed Forest Flycatcher Fraseria cinerascens resident  1999  present  A3  Least Concern 
Sooty Flycatcher Muscicapa infuscata resident  1999  present  A3  Least Concern 
Olivaceous Flycatcher Muscicapa olivascens resident  1999  present  A3  Least Concern 
Cassin's Grey Flycatcher Muscicapa cassini resident  1999  present  A3  Least Concern 
Scarlet-tufted Sunbird Anthreptes fraseri resident  1999  present  A3  Least Concern 
Mouse-brown Sunbird Anthreptes gabonicus resident  1999  present  A3  Least Concern 
Violet-tailed Sunbird Anthreptes aurantium resident  1999  present  A3  Least Concern 
Green Sunbird Anthreptes rectirostris resident  1999  present  A3  Least Concern 
Little Green Sunbird Nectarinia seimundi resident  1999  present  A3  Least Concern 
Reichenbach's Sunbird Nectarinia reichenbachii resident  1999  present  A3  Least Concern 
Blue-throated Brown Sunbird Nectarinia cyanolaema resident  1999  present  A3  Least Concern 
Carmelite Sunbird Nectarinia fuliginosa resident  1999  present  A3  Least Concern 
Johanna's Sunbird Nectarinia johannae resident  1999  present  A3  Least Concern 
Superb Sunbird Nectarinia superba resident  1999  present  A3  Least Concern 
Loango Weaver Ploceus subpersonatus resident  1999  present  A1, A2, A3  Vulnerable 
Orange Weaver Ploceus aurantius resident  1999  present  A3  Least Concern 
Vieillot's Black Weaver Ploceus nigerrimus resident  1999  present  A3  Least Concern 
Yellow-mantled Weaver Ploceus tricolor resident  1999  present  A3  Least Concern 
Black-throated Malimbe Malimbus cassini resident  1999  present  A3  Least Concern 
Red-bellied Malimbe Malimbus erythrogaster resident  1999  present  A3  Least Concern 
Gray's Malimbe Malimbus nitens resident  1999  present  A3  Least Concern 
Red-headed Malimbe Malimbus rubricollis resident  1999  present  A3  Least Concern 
Woodhouse's Antpecker Parmoptila woodhousei resident  1999  present  A3  Least Concern 
White-breasted Negrofinch Nigrita fusconotus resident  1999  present  A3  Least Concern 
Chestnut-breasted Negrofinch Nigrita bicolor resident  1999  present  A3  Least Concern 
Pale-fronted Negrofinch Nigrita luteifrons resident  1999  present  A3  Least Concern 
Western Bluebill Spermophaga haematina resident  1999  present  A3  Least Concern 
Pale-billed Firefinch Lagonosticta landanae resident  1999  present  A3  Least Concern 
Long-legged Pipit Anthus pallidiventris resident  1999  present  A3  Least Concern 

Habitats

IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial   1%
Unknown   2%
Shrubland   1%
Grassland   1%
Forest   92%

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
forestry -

Other biodiversity Trichechus senegalensis (VU) is present in the Kouilou river and its larger tributaries (e.g. the Nanga), but is probably decreasing. Loxodonta africana (EN), Mandrillus sphinx (LR/nt) and small arboreal monkeys have been largely exterminated, but there are still good numbers of Gorilla gorilla (EN) and Pan troglodytes (EN).

References Bulens and Dowsett (2001), Dowsett and Dowsett-Lemaire (1991), Sénéchal et al. (1989).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Lower Kouilou basin. Downloaded from http://www.birdlife.org on 11/07/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife