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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
Hartlaub's Duck Pteronetta hartlaubii	LC	resident (1999)	present	A3
Blue-headed Wood-dove Turtur brehmeri	LC	resident (1999)	present	A3
Black-throated Coucal Centropus leucogaster	LC	resident (1999)	present	A3
Dusky Long-tailed Cuckoo Cercococcyx mechowi	LC	resident (1999)	present	A3
White-spotted Flufftail Sarothrura pulchra	LC	resident (1999)	present	A3
Green Turaco Tauraco persa	LC	resident (1999)	present	A3
Yellow-billed Turaco Tauraco macrorhynchus	LC	resident (1999)	present	A3
Congo Serpent-eagle Dryotriorchis spectabilis	LC	resident (1999)	present	A3
Cassin's Hawk-eagle Aquila africana	LC	resident (1999)	present	A3
West African Pied Hornbill Lophoceros semifasciatus	LC	resident (1999)	present	A3
Eastern Piping Hornbill Bycanistes sharpii	LC	resident (1999)	present	A3
Chocolate-backed Kingfisher Halcyon badia	LC	resident (1999)	present	A3
Eastern Yellow-spotted Barbet Buccanodon duchaillui	LC	resident (1999)	present	A3
Red-rumped Tinkerbird Pogoniulus atroflavus	LC	resident (1999)	present	A3
Yellow-throated Tinkerbird Pogoniulus subsulphureus	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
Fire-bellied Woodpecker Dendropicos pyrrhogaster	LC	resident (1999)	present	A3
Grey Parrot Psittacus erithacus	EN	resident (1999)	present	A3
Blue Cuckooshrike Cyanograucalus azureus	LC	resident (1999)	present	A3
Red-billed Helmetshrike Prionops caniceps	LC	resident (1999)	present	A3
Chestnut Wattle-eye Dyaphorophyia castanea	LC	resident (1999)	present	A3
Shining Drongo Dicrurus atripennis	LC	resident (1999)	present	A3
Western Crested-flycatcher Trochocercus nitens	LC	resident (1999)	present	A3
Dusky Crested-flycatcher Elminia nigromitrata	LC	resident (1999)	present	A3
Western Nicator Nicator chloris	LC	resident (1999)	present	A3
Green Crombec Sylvietta virens	LC	resident (1999)	present	A3
Black-capped Apalis Apalis nigriceps	LC	resident (1999)	present	A3
Olive-green Camaroptera Camaroptera chloronota	LC	resident (1999)	present	A3
Chattering Cisticola Cisticola anonymus	LC	resident (1999)	present	A3
Grey-headed Bristlebill Bleda canicapillus	LC	resident (1999)	present	A3
Yellow-lored Bristlebill Bleda notatus	LC	resident (1999)	present	A3
Spotted Greenbul Ixonotus guttatus	LC	resident (1999)	present	A3
Honeyguide Greenbul Baeopogon indicator	LC	resident (1999)	present	A3
White-tailed Greenbul Baeopogon clamans	LC	resident (1999)	present	A3
Ansorge's Greenbul Eurillas ansorgei	LC	resident (1999)	present	A3
Plain Greenbul Eurillas curvirostris	LC	resident (1999)	present	A3
Red-tailed Greenbul Criniger calurus	LC	resident (1999)	present	A3
Leaf-love Pyrrhurus scandens	LC	resident (1999)	present	A3
Green Hylia Hylia prasina	LC	resident (1999)	present	A3
Black-capped Illadopsis Illadopsis cleaveri	LC	resident (1999)	present	A3
Purple-headed Starling Hylopsar purpureiceps	LC	resident (1999)	present	A3
Rufous Flycatcher-thrush Stizorhina fraseri	LC	resident (1999)	present	A3
Fire-crested Alethe Alethe castanea	LC	resident (1999)	present	A3
Blue-throated Brown Sunbird Cyanomitra cyanolaema	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
Woodhouse's Antpecker Parmoptila woodhousei	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 (2019) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	poor (40–69%)	poor (40–69%)	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	very low

Habitat	% of IBA	Habitat detail
Forest	100

Land use	% of IBA
forestry	-
urban/industrial/transport	-

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