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The site was identified as internationally important for bird conservation in 2009 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

Populations meeting IBA criteria ('key species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Hawaiian Duck Anas wyvilliana	VU	resident (1999)	23 individuals	A1, A2
Hawaiian Coot Fulica alai	NT	resident (2002)	389 individuals	A1, A2, A4i
Black-winged Stilt Himantopus himantopus	LC	resident (2004)	259 individuals	A4i

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2012) is shown below.

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A compre­hensive and appropriate manage­ment plan exists that aims to maintain or improve the popul­ations of qualify­ing bird species	Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity	high

Year	Protected Area	Designation (management category)	% coverage of IBA
1972	Pearl Harbor	National Wildlife Refuge (IV)	100
1976	Pearl Harbour	National Wildlife Refuge (IV)	100

Land use	% of IBA
nature conservation and research	100

All of the land comprising Pearl Harbor National Wildlife Refuge is owned by the U.S. Navy and is managed under a cooperative agreement by the U.S. Fish and Wildlife Service.

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Pearl Harbor National Wildlife Refuge (USA). Downloaded from https://datazone.birdlife.org/site/factsheet/pearl-harbor-national-wildlife-refuge-iba-usa on 08/01/2025.