• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as internationally important for bird conservation in 2007 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 List	Season (year/s of estimate)	Size	IBA criteria
White-crowned Pigeon Patagioenas leucocephala	NT	resident (2006)	150–300 birds	A1
Red-footed Booby Sula sula	LC	resident (2006)	5,000–7,000 birds	A4ii

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2008) is shown below.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Magnificent Frigatebird Fregata magnificens	175 / 175 (birds)	100	good
Red-footed Booby Sula sula	6,000 / 6,000 (birds)	100	good

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Coastal/Supratidal	moderate (70–90%)	moderate (70–90%)	poor
Shrubland	moderate (70–90%)	moderate (70–90%)	poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Whole area (>90%) covered by appropriate conservation designation	No management plan exists, but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Navassa Island	National Wildlife Refuge (IV)	83
1999	Navassa Island	National Wildlife Refuge (IV)	89

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	major (>10)
Marine Neritic	major (>10)
Forest	minor (<10)	Lowland evergreen rain forest (tropical)
Shrubland	-

Land use	% of IBA
hunting	minor (<10)
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Navassa (United States Minor Outlying Islands (to USA)). Downloaded from https://datazone.birdlife.org/site/factsheet/navassa-iba-united-states-minor-outlying-islands-(to-usa) on 22/12/2024.