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

The site was identified as important in 2012 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
Micronesian Scrubfowl Megapodius laperouse	NT	resident	-	present	A1, A2
Red-tailed Tropicbird Phaethon rubricauda	LC	breeding	1979-1988	200 breeding pairs	A4ii
Brown Noddy Anous stolidus	LC	breeding	1979-1988	6,000 breeding pairs	A4i
Micronesian Myzomela Myzomela rubratra	LC	resident	-	present	A2
Micronesian Starling Aplonis opaca	LC	resident	-	present	A2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2012) may differ.

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

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Red-tailed Tropicbird Phaethon rubricauda	200	200	breeding pairs	100	not assessed
Brown Noddy Anous stolidus	6,000	6,000	breeding pairs	100	not assessed

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	no or imperceptible deterioration	low

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90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation	% overlap with IBA
1985	Maug Island	Preserve	100
2009	Marianas Trench	Marine National Monument	100
2009	Marianas Trench	Marine National Monument	100
2009	Mariana Arc Of Fire	National Wildlife Refuge	100

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Maug Islands (Northern Mariana Islands (to USA)). Downloaded from https://datazone.birdlife.org/site/factsheet/maug-islands-iba-northern-mariana-islands-(to-usa) on 23/11/2024.