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The site was identified as internationally important for bird conservation in 1998 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
Southern Banded Snake-eagle Circaetus fasciolatus	NT	resident (1998)	present	A1, A3
Mangrove Kingfisher Halcyon senegaloides	LC	resident (1998)	present	A3
Woodwards' Batis Batis fratrum	LC	resident (1998)	present	A3
Gorgeous Bushshrike Telophorus viridis	LC	resident (1998)	present	A3
Rudd's Apalis Apalis ruddi	LC	resident (1998)	present	A2, A3
Black-bellied Starling Notopholia corusca	LC	resident (1998)	present	A3
Mouse-coloured Sunbird Cyanomitra verreauxii	LC	resident (1998)	present	A3
Pink-throated Twinspot Hypargos margaritatus	LC	resident (1998)	present	A2, A3

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Kosi Bay	Designation Not Known (-)	100
1999	iSimangaliso Wetland Park	World Heritage Site (natural or mixed) (UA)	100

Habitat	% of IBA	Habitat detail
Forest	major (>10)	Lowland forest - mixed swamp; Mangrove
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	major (>10)
Wetlands (inland)	major (>10)	Riverine floodplains; Rivers & streams; Permanent herbaceous swamps and bogs; Freshwater lakes and pools

Land use	% of IBA
nature conservation and research	100
water management	80
fisheries/aquaculture	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Kosi Bay system (South Africa). Downloaded from https://datazone.birdlife.org/site/factsheet/kosi-bay-system-iba-south-africa on 23/12/2024.