Angat watershed

IBA Criteria

Year of most recent IBA criteria assessment: 2001

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Luzon Bleeding-heart Gallicolumba luzonica NT resident 1985 present A2
Spotted Imperial-pigeon Ducula carola VU resident 1990 23 individuals A1
Flame-breasted Fruit-dove Ramphiculus marchei VU resident 1880-1900 present A1, A2
Rufous Coucal Centropus unirufus NT resident 1990-1999 present A2
Red-crested Malkoha Dasylophus superciliosus LC resident 1990-1999 common A2
Scale-feathered Malkoha Lepidogrammus cumingi LC resident 1990-1999 present A2
Spotted Buttonquail Turnix ocellatus LC resident 1990-1999 present A2
Luzon Buttonquail Turnix worcesteri DD resident 1969 present A2
Luzon Highland Scops-owl Otus longicornis NT resident 1969 present A2
Philippine Eagle-owl Bubo philippensis VU resident 1981-1999 present A1
North Philippine Hawk-eagle Nisaetus philippensis EN resident 1990 present A1
Luzon Hornbill Penelopides manillae LC resident 1990-1999 present A2
North Philippine Dwarf-kingfisher Ceyx melanurus VU resident 1992 present A1
Green Racquet-tail Prioniturus luconensis EN resident 1986-1990 present A1, A2
Whiskered Pitta Erythropitta kochi NT resident 1996 present A1, A2
White-lored Oriole Oriolus albiloris LC resident 1990-1999 present A2
Blackish Cicadabird Edolisoma coerulescens LC resident 1990-1999 frequent A2
Celestial Monarch Hypothymis coelestis VU resident 1990-1997 present A1, A2
White-fronted Tit Sittiparus semilarvatus NT resident 1990-1999 present A2
Grey-backed Tailorbird Orthotomus derbianus LC resident 1990-1999 present A2
Robsonius rabori NR resident 1990-1999 common A2
Luzon Striped Babbler Zosterornis striatus LC resident 1980-1989 present A2
Grand Rhabdornis Rhabdornis grandis LC resident 1990-1999 present A2
Ashy Thrush Geokichla cinerea VU resident 1990-1999 frequent A1, A2
Ashy-breasted Flycatcher Muscicapa randi VU resident 1988 present A1, A2
Furtive Flycatcher Ficedula disposita NT resident 1990-1999 present A2
Green-faced Parrotfinch Erythrura viridifacies VU resident 1983 present A1, A2

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Angat (Metro Water District) Watershed Forest Reserve 55,709 protected area overlaps with site 6,600
Angat Watershed Forest Reserve 55,709 protected area overlaps with site 6,600


IUCN Habitat Habitat detail Extent (% of site)
Forest -
Artificial/Terrestrial -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Angat watershed. Downloaded from on 01/04/2023.