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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
White-winged Duck Asarcornis scutulata	CR	resident (2000)	present	A1
Silvery Pigeon Columba argentina	CR	resident (2000)	present	A1, A3
Large Green-pigeon Treron capellei	VU	resident (2000)	present	A1, A3
Lesser Adjutant Leptoptilos javanicus	NT	resident (1984–1986)	present	A1, A4i
Milky Stork Mycteria cinerea	EN	resident (1984–1986)	1,000 birds	A1, A4i
Storm's Stork Ciconia stormi	EN	resident (1984–1986)	7 birds	A1, A3, A4i
Black-headed Ibis Threskiornis melanocephalus	LC	non-breeding (1991)	750 birds	A4i
Spot-billed Pelican Pelecanus philippensis	NT	resident (1984–1986)	7 birds	A1, A4i
Far Eastern Curlew Numenius madagascariensis	EN	winter (1984–1986)	2,600 birds	A4i
Black-tailed Godwit Limosa limosa	NT	winter (1984–1985)	30,000 birds	A4i
Asian Dowitcher Limnodromus semipalmatus	NT	winter (1984–1986)	10,000–13,000 birds	A4i
Spotted Greenshank Tringa guttifer	EN	winter (1988)	21 birds	A1
Wallace's Hawk-eagle Nisaetus nanus	VU	resident (2000)	present	A1, A3
Malay Blue-banded Kingfisher Alcedo peninsulae	NT	resident (2000)	present	A1, A3
A4iii Species group - waterbirds	n/a	winter (1984–1986)	35,000–40,000 birds	A4iii

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Sembilang	Taman Nasional (II)	95
1988	Terusan Dalam	Game Reserve (IV)	19

Habitat	% of IBA	Habitat detail
Forest	90	Mangrove forest (tropical); Peat swamp forest (tropical)
Artificial/Terrestrial	minor (<10)
Marine Coastal/Supratidal	minor (<10)
Marine Intertidal	minor (<10)
Wetlands (inland)	minor (<10)

Land use	% of IBA
forestry	50
nature conservation and research	20
fisheries/aquaculture	-
agriculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sembilang (Indonesia). Downloaded from https://datazone.birdlife.org/site/factsheet/sembilang-iba-indonesia on 23/12/2024.