Mount Agtuuganon and Mount Pasian

IBA Justification

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).

IBA Protection

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.

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Mount Agtuuganon and Mount Pasian. Downloaded from on 29/11/2023.