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The site was identified as important in 2006 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
Spotted Imperial-pigeon Ducula carola	VU	resident	2000	present	A1
Flame-breasted Fruit-dove Ramphiculus marchei	VU	resident	2000	present	A1, A2
Philippine Eagle-owl Bubo philippensis	VU	resident	2000	present	A1
Philippine Eagle Pithecophaga jefferyi	CR	resident	1900-1919	present	A1
North Philippine Dwarf-kingfisher Ceyx melanurus	LC	resident	2000	present	A1
Green Racquet-tail Prioniturus luconensis	EN	resident	2000	present	A1, A2
Whiskered Pitta Erythropitta kochi	LC	resident	2000	present	A1, A2
Celestial Monarch Hypothymis coelestis	VU	resident	2000	present	A1, A2
Ashy Thrush Geokichla cinerea	VU	resident	2000	present	A1, A2
Ashy-breasted Flycatcher Muscicapa randi	VU	resident	2000	present	A1, A2
Green-faced Parrotfinch Erythrura viridifacies	VU	resident	2000	present	A1, A2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2006) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2006. The most recent assessment (2018) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	-	moderate (70-90%)	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Energy production and mining	likely in short term (within 4 years)	majority/most of area/population (50-90%)	slow but significant deterioration	medium
Transportation and service corridors	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

Year	Protected Area	Designation	% overlap with IBA
1968	Angat (Metro Water District)	Watershed Forest Reserve	21
1968	Angat	Watershed Forest Reserve	2
1987	Unnamed National Park, Wildlife Sanctuary and Game Preserve (PD 1636)	National Park	24
1988	Doña Remedios Trinidad - General Tinio	Watershed Forest Reserve	7
2011	Upper Marikina River Basin	Protected Landscape	<1

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: Mounts Irid-Angilo and Binuang (Philippines). Downloaded from https://datazone.birdlife.org/site/factsheet/mounts-irid-angilo-and-binuang-iba-philippines on 22/11/2024.