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The site was identified as internationally important for bird conservation in 2004 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
Crested Partridge Rollulus rouloul	VU	resident (2004)	present	A3
Bornean Crestless Fireback Lophura pyronota	EN	resident (1995)	present	A1, A3
Little Green-pigeon Treron olax	LC	resident (2004)	present	A3
Grey Imperial-pigeon Ducula pickeringii	VU	non-breeding (1995–2002)	present	A1, A2
Jambu Fruit-dove Ramphiculus jambu	NT	resident (2004)	present	A3
Large Frogmouth Batrachostomus auritus	VU	resident (2004)	present	A3
Malay Eared-nightjar Lyncornis temminckii	LC	resident (2004)	present	A3
Silver-rumped Spinetail Rhaphidura leucopygialis	LC	resident (2004)	present	A3
Bornean Ground-cuckoo Carpococcyx radiceus	VU	resident (2004)	present	A3
Short-toed Coucal Centropus rectunguis	VU	resident (1986–2002)	present	A1, A3
Red-billed Malkoha Zanclostomus javanicus	LC	resident (2004)	present	A3
Black-bellied Malkoha Phaenicophaeus diardi	NT	resident (2004)	present	A3
Chestnut-bellied Malkoha Phaenicophaeus sumatranus	NT	resident (2004)	present	A3
Storm's Stork Ciconia stormi	EN	non-breeding (1986)	1 birds	A1, A3
Barred Eagle-owl Bubo sumatranus	NT	resident (2004)	present	A3
Wallace's Hawk-eagle Nisaetus nanus	VU	resident (2002)	present	A1, A3
Cinnamon-rumped Trogon Harpactes orrhophaeus	VU	resident (2004)	present	A3
Scarlet-rumped Trogon Harpactes duvaucelii	NT	resident (2004)	present	A3
Diard's Trogon Harpactes diardii	NT	resident (2004)	present	A3
Red-naped Trogon Harpactes kasumba	NT	resident (2004)	present	A3
White-crowned Hornbill Berenicornis comatus	EN	resident (2004)	present	A3
Rhinoceros Hornbill Buceros rhinoceros	VU	resident (2004)	present	A3
Bushy-crested Hornbill Anorrhinus galeritus	NT	resident (2004)	present	A3
Black Hornbill Anthracoceros malayanus	VU	resident (2004)	present	A3
Wrinkled Hornbill Rhabdotorrhinus corrugatus	EN	resident (2004)	present	A3
Red-bearded Bee-eater Nyctyornis amictus	LC	resident (2004)	present	A3
Malay Blue-banded Kingfisher Alcedo peninsulae	NT	resident (1995–2002)	uncommon	A1, A3
Red-throated Barbet Psilopogon mystacophanos	NT	resident (2004)	present	A3
Red-crowned Barbet Psilopogon rafflesii	NT	resident (2004)	present	A3
Malaysian Honeyguide Indicator archipelagicus	NT	resident (2004)	present	A3
Rufous Piculet Sasia abnormis	LC	resident (2004)	present	A3
Maroon Woodpecker Blythipicus rubiginosus	LC	resident (2004)	present	A3
Orange-backed Woodpecker Chrysocolaptes validus	LC	resident (2004)	present	A3
Olive-backed Woodpecker Chloropicoides rafflesii	NT	resident (2004)	present	A3
Buff-necked Woodpecker Meiglyptes tukki	NT	resident (2004)	present	A3
Banded Woodpecker Chrysophlegma miniaceum	LC	resident (2004)	present	A3
Black-thighed Falconet Microhierax fringillarius	LC	resident (2004)	present	A3
Blue-crowned Hanging-parrot Loriculus galgulus	LC	resident (2004)	present	A3
Long-tailed Parakeet Belocercus longicaudus	VU	resident (2004)	present	A3
Black-and-red Broadbill Cymbirhynchus macrorhynchos	LC	resident (2004)	present	A3
Black-and-yellow Broadbill Eurylaimus ochromalus	NT	resident (2004)	present	A3
Green Broadbill Calyptomena viridis	NT	resident (2004)	present	A3
Oriolus xanthonotus	NR	resident (2004)	present	A3
Fiery Minivet Pericrocotus igneus	NT	resident (2004)	present	A3
Lesser Cuckooshrike Lalage fimbriata	LC	resident (2004)	present	A3
Black-winged Flycatcher-shrike Hemipus hirundinaceus	LC	resident (2004)	present	A3
Rufous-winged Philentoma Philentoma pyrhoptera	LC	resident (2004)	present	A3
Maroon-breasted Philentoma Philentoma velata	NT	resident (2004)	present	A3
Green Iora Aegithina viridissima	NT	resident (2004)	present	A3
Bornean Bristlehead Pityriasis gymnocephala	VU	resident (2004)	present	A3
Spotted Fantail Rhipidura perlata	LC	resident (2004)	present	A3
Crested Jayshrike Platylophus galericulatus	NT	resident (2004)	present	A3
Bornean Black Magpie Platysmurus aterrimus	LC	resident (2004)	present	A3
Hairy-backed Bulbul Tricholestes criniger	LC	resident (2004)	present	A3
Hook-billed Bulbul Setornis criniger	VU	resident (1986–2002)	frequent	A1, A3
Yellow-bellied Bulbul Alophoixus phaeocephalus	LC	resident (2004)	present	A3
Grey-cheeked Bulbul Alophoixus tephrogenys	VU	resident (2004)	present	A3
Finsch's Bulbul Iole finschii	NT	resident (2004)	present	A3
Buff-vented Bulbul Iole charlottae	NT	resident (2004)	present	A3
Streaked Bulbul Ixos malaccensis	NT	resident (2004)	present	A3
Grey-bellied Bulbul Ixidia cyaniventris	NT	resident (2004)	present	A3
Red-eyed Bulbul Pycnonotus brunneus	LC	resident (2004)	present	A3
Olive-winged Bulbul Pycnonotus plumosus	LC	resident (2004)	present	A3
Cream-eyed Bulbul Pycnonotus pseudosimplex	LC	resident (2004)	present	A3
Puff-backed Bulbul Euptilotus eutilotus	NT	resident (2004)	present	A3
Black-and-white Bulbul Microtarsus melanoleucos	NT	resident (2004)	present	A3
Pomatorhinus montanus	NR	resident (2004)	present	A3
Black-throated Babbler Stachyris nigricollis	NT	resident (2004)	present	A3
Chestnut-rumped Babbler Stachyris maculata	NT	resident (2004)	present	A3
Fluffy-backed Tit-babbler Macronus ptilosus	NT	resident (2004)	present	A3
Grey-hooded Babbler Cyanoderma bicolor	LC	resident (2004)	present	A3
Sooty-capped Babbler Malacopteron affine	NT	resident (2004)	present	A3
Grey-breasted Babbler Malacopteron albogulare	NT	resident (2004)	present	A3
Rufous-crowned Babbler Malacopteron magnum	NT	resident (2004)	present	A3
Moustached Babbler Malacopteron magnirostre	LC	resident (2004)	present	A3
Short-tailed Babbler Pellorneum malaccense	NT	resident (2004)	present	A3
Ferruginous Babbler Pellorneum bicolor	LC	resident (2004)	present	A3
White-chested Babbler Pellorneum rostratum	NT	resident (2004)	present	A3
Black-capped Babbler Pellorneum nigrocapitatum	LC	resident (2004)	present	A3
Striped Wren-babbler Kenopia striata	NT	resident (2004)	present	A3
Horsfield's Babbler Malacocincla sepiaria	LC	resident (2004)	present	A3
Bornean Wren-babbler Ptilocichla leucogrammica	VU	resident (1987–2003)	present	A1, A3
Brown Fulvetta Alcippe brunneicauda	NT	resident (2004)	present	A3
Rufous-tailed Shama Copsychus pyrropygus	NT	resident (2004)	present	A3
Grey-chested Jungle-flycatcher Cyornis umbratilis	NT	resident (2004)	present	A3
Malaysian Blue Flycatcher Cyornis turcosus	NT	resident (2004)	present	A3
Chestnut-naped Forktail Enicurus ruficapillus	NT	resident (2004)	present	A3
Greater Green Leafbird Chloropsis sonnerati	EN	resident (2004)	present	A3
Lesser Green Leafbird Chloropsis cyanopogon	NT	resident (2004)	present	A3
Yellow-breasted Flowerpecker Prionochilus maculatus	LC	resident (2004)	present	A3
Scarlet-breasted Flowerpecker Prionochilus thoracicus	NT	resident (2004)	present	A3
Yellow-rumped Flowerpecker Prionochilus xanthopygius	LC	resident (2004)	present	A3
Crimson-breasted Flowerpecker Prionochilus percussus	LC	resident (2004)	present	A3
Brown-backed Flowerpecker Dicaeum everetti	NT	resident (2004)	present	A3
Thick-billed Spiderhunter Arachnothera crassirostris	LC	resident (2004)	present	A3
Long-billed Spiderhunter Arachnothera robusta	LC	resident (2004)	present	A3
Yellow-eared Spiderhunter Arachnothera chrysogenys	LC	resident (2004)	present	A3
Spectacled Spiderhunter Arachnothera flavigaster	LC	resident (2004)	present	A3
Plain Sunbird Anthreptes simplex	LC	resident (2004)	present	A3
Red-throated Sunbird Anthreptes rhodolaemus	NT	resident (2004)	present	A3

Year	Protected Area	Designation (management category)	% coverage of IBA
1976	Similajau	National Park (II)	100

Habitat	% of IBA	Habitat detail
Forest	major (>10)
Marine Neritic	major (>10)
Marine Intertidal	minor (<10)
Wetlands (inland)	minor (<10)	Rivers and streams

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Similajau National Park (Malaysia). Downloaded from https://datazone.birdlife.org/site/factsheet/similajau-national-park-iba-malaysia on 27/12/2024.