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The site was identified as internationally important for bird conservation in 2001 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Forest Francolin Peliperdix lathami	LC	resident (1999)	present	A3
Hartlaub's Duck Pteronetta hartlaubii	LC	resident (1999)	present	A3
Blue-headed Wood-dove Turtur brehmeri	LC	resident (1999)	present	A3
Dusky Long-tailed Cuckoo Cercococcyx mechowi	LC	resident (1999)	present	A3
Green Turaco Tauraco persa	LC	resident (1999)	present	A3
Cassin's Hawk-eagle Aquila africana	LC	resident (1999)	present	A3
Congo Pied Hornbill Lophoceros fasciatus	LC	resident (1999)	present	A3
Eastern Piping Hornbill Bycanistes sharpii	LC	resident (1999)	present	A3
Black Bee-eater Merops gularis	LC	resident (1999)	present	A3
Blue-throated Roller Eurystomus gularis	LC	resident (1999)	present	A3
White-bellied Kingfisher Corythornis leucogaster	LC	resident (1999)	present	A3
Eastern Yellow-spotted Barbet Buccanodon duchaillui	LC	resident (1999)	present	A3
Eastern Yellow-billed Barbet Trachylaemus purpuratus	LC	resident (1999)	present	A3
Naked-faced Barbet Gymnobucco calvus	LC	resident (1999)	present	A3
Spotted Honeyguide Indicator maculatus	LC	resident (1999)	present	A3
Grey-headed Broadbill Smithornis sharpei	LC	resident (1999)	present	A3
Western Black-headed Oriole Oriolus brachyrynchus	LC	resident (1999)	present	A3
African Shrike-flycatcher Megabyas flammulatus	LC	resident (1999)	present	A3
Chestnut Wattle-eye Dyaphorophyia castanea	LC	resident (1999)	present	A3
Red-bellied Paradise-flycatcher Terpsiphone rufiventer	LC	resident (1999)	present	A3
Western Nicator Nicator chloris	LC	resident (1999)	present	A3
Green Crombec Sylvietta virens	LC	resident (1999)	present	A3
Lemon-bellied Crombec Sylvietta denti	LC	resident (1999)	present	A3
Buff-throated Apalis Apalis rufogularis	LC	resident (1999)	present	A3
Yellow-browed Camaroptera Camaroptera superciliaris	LC	resident (1999)	present	A3
Olive-green Camaroptera Camaroptera chloronota	LC	resident (1999)	present	A3
Fanti Saw-wing Psalidoprocne obscura	LC	resident (1999)	present	A3
Red-tailed Bristlebill Bleda syndactylus	LC	resident (1999)	present	A3
Spotted Greenbul Ixonotus guttatus	LC	resident (1999)	present	A3
Simple Greenbul Chlorocichla simplex	LC	resident (1999)	present	A3
Grey Greenbul Eurillas gracilis	LC	resident (1999)	present	A3
Red-tailed Greenbul Criniger calurus	LC	resident (1999)	present	A3
Green Hylia Hylia prasina	LC	resident (1999)	present	A3
Yellow-footed Flycatcher Muscicapa sethsmithi	LC	resident (1999)	present	A3
Cassin's Flycatcher Muscicapa cassini	LC	resident (1999)	present	A3
White-browed Forest-flycatcher Fraseria cinerascens	LC	resident (1999)	present	A3
Orange-breasted Forest-robin Stiphrornis erythrothorax	LC	resident (1999)	present	A3
Blue-throated Brown Sunbird Cyanomitra cyanolaema	LC	resident (1999)	present	A3
Johanna's Sunbird Cinnyris johannae	LC	resident (1999)	present	A3
Vieillot's Black Weaver Ploceus nigerrimus	LC	resident (1999)	present	A3
Red-vented Malimbe Malimbus scutatus	LC	resident (1999)	present	A3
Red-headed Malimbe Malimbus rubricollis	LC	resident (1999)	present	A3
Western Bluebill Spermophaga haematina	LC	resident (1999)	present	A3
Chestnut-breasted Nigrita Nigrita bicolor	LC	resident (1999)	present	A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2001. The most recent assessment (2017) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	-	good (>90%)	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	whole of popul­ation/area (>90%)	rapid decline (>30% over 3 gener­ations)	very high
Biological resource use	happe­ning now	whole of popul­ation/area (>90%)	rapid decline (>30% over 3 gener­ations)	very high
Human intrusions and disturbance	happe­ning now	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Most of area (50–90%) covered (including the most critical parts for important bird species)	A management plan exists, but it is out of date or not compre­hensive	Some limited conservation initiatives are in place	low

Habitat	% of IBA	Habitat detail
Forest	72
Savanna	27

Land use	% of IBA
agriculture	-
forestry	-
hunting	-
nature conservation and research	-
water management	-
other	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Donga river basin forests (Nigeria). Downloaded from https://datazone.birdlife.org/site/factsheet/donga-river-basin-forests-iba-nigeria on 23/12/2024.