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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
Philippine Duck Anas luzonica	VU	resident	1996	240-3,000 individuals	A1
Luzon Bleeding-heart Gallicolumba luzonica	NT	resident	1996	present	A2
Cream-bellied Fruit-dove Ramphiculus merrilli	NT	resident	1996	present	A2
Rufous Coucal Centropus unirufus	NT	resident	1996	present	A2
Red-crested Malkoha Dasylophus superciliosus	LC	resident	1996	present	A2
Chinese Egret Egretta eulophotes	VU	non-breeding	1991	present	A1
Luzon Hornbill Penelopides manillae	LC	resident	1996	present	A2
North Philippine Dwarf-kingfisher Ceyx melanurus	LC	resident	1996	present	A1
Philippine Cockatoo Cacatua haematuropygia	CR	resident	1996	rare	A1
Short-crested Monarch Hypothymis helenae	NT	resident	1996	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
1966	Polilio	Watershed Forest Reserve	17

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

1. IUCN Habitat classification.

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