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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Mindanao Bleeding-heart Gallicolumba crinigera	VU	resident	1998	present	A1, A2
Spotted Imperial-pigeon Ducula carola	VU	resident	1880-1900	present	A1
Philippine Spinetail Mearnsia picina	NT	resident	1900-1930	present	A2
Japanese Night Heron Gorsachius goisagi	VU	winter	1900-1919	present	A1
Chinese Egret Egretta eulophotes	VU	non-breeding	1990-1999	present	A1
Giant Scops-owl Otus gurneyi	VU	resident	1880-1900	present	A1, A2
Philippine Eagle Pithecophaga jefferyi	CR	resident	1945	frequent	A1
Writhed Hornbill Rhabdotorrhinus leucocephalus	NT	resident	1945	present	A2
Mindanao Hornbill Penelopides affinis	LC	resident	1997-1998	present	A2
South Philippine Dwarf-Kingfisher Ceyx mindanensis	LC	resident	1983-1993	present	A1
Southern Silvery Kingfisher Ceyx argentatus	NT	resident	1880-1900	present	A1, A2
Blue-capped Kingfisher Actenoides hombroni	LC	resident	1880-1900	present	A1, A2
Rufous-lored Kingfisher Todiramphus winchelli	VU	resident	1900-1919	present	A1
Philippine Cockatoo Cacatua haematuropygia	CR	resident	1880-1900	present	A1
Azure-breasted Pitta Pitta steerii	VU	resident	1880-1900	present	A1, A2
Mindanao Wattled Broadbill Sarcophanops steerii	VU	resident	1993	present	A1, A2
Celestial Monarch Hypothymis coelestis	VU	resident	1880-1900	present	A1, A2
White-eared Tailorbird Orthotomus cinereiceps	LC	resident	1990-1999	present	A2
Zamboanga Bulbul Hypsipetes rufigularis	NT	resident	1990-1999	common	A2
Striated Wren-babbler Ptilocichla mindanensis	LC	resident	1900-1949	present	A2
Little Slaty Flycatcher Ficedula basilanica	VU	resident	1993	present	A1, A2
Philippine Leafbird Chloropsis flavipennis	VU	resident	1998	present	A1, A2
Dicaeum anthonyi	NR	resident	1997	present	A2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2001) may differ.

Year	Protected Area	Designation	% overlap with IBA
-	Pasonanca Buffer Zone	Natural Park - Buffer Zone	6
1999	Pasonanca	Natural Park	100

Habitat1	Habitat detail	% of IBA
Forest		major (>10)
Artificial/Terrestrial		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Pasonanca watershed (Philippines). Downloaded from https://datazone.birdlife.org/site/factsheet/pasonanca-watershed-iba-philippines on 22/11/2024.