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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'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Spotted Imperial-pigeon Ducula carola	VU	resident	1997	present	A1
Giant Scops-owl Otus gurneyi	VU	resident	1994	present	A1, A2
Philippine Eagle Pithecophaga jefferyi	CR	resident	1967-1979	present	A1
South Philippine Hawk-eagle Nisaetus pinskeri	EN	resident	1997	present	A1
Writhed Hornbill Rhabdotorrhinus leucocephalus	NT	resident	1994	present	A2
Mindanao Hornbill Penelopides affinis	LC	resident	1997	common	A2
South Philippine Dwarf-Kingfisher Ceyx mindanensis	VU	resident	1997	present	A1
Blue-capped Kingfisher Actenoides hombroni	VU	resident	1994	present	A1, A2
Micromacronus leytensis	NR	resident	1996-1997	present	A2
Long-tailed Grasshopper-warbler Locustella caudata	LC	resident	1990-1999	present	A2
Yellowish Bulbul Hypsipetes everetti	LC	resident	1997	present	A2
Rusty-crowned Babbler Sterrhoptilus capitalis	LC	resident	1900-1930	present	A2
Mindanao Pygmy Babbler Dasycrotapha plateni	NT	resident	1990-1999	present	A2
Little Slaty Flycatcher Ficedula basilanica	VU	resident	1994	present	A1, A2
Cryptic Flycatcher Ficedula crypta	LC	resident	1997	present	A2
Dicaeum anthonyi	NR	resident	1987	present	A2
Dicaeum anthonyi	NR	resident	1987-1997	present	A2
Lina's Sunbird Aethopyga linaraborae	NT	resident	1994	common	A2
Grey-hooded Sunbird Aethopyga primigenia	LC	resident	1988	present	A2
Apo Sunbird Aethopyga boltoni	LC	resident	1987	present	A2
Red-eared Parrotfinch Erythrura coloria	LC	resident	1994	present	A2

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2001).

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Aliwagwag	Protected Landscape	10,491	protected area overlaps with site	0

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Artificial/Terrestrial		-
Forest		-

For more information about the IUCN Habitat classification, please click here.

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Mount Agtuuganon and Mount Pasian. Downloaded from http://datazone.birdlife.org/site/factsheet/mount-agtuuganon-and-mount-pasian-iba-philippines on 29/11/2023.