• Summary
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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
Black Noddy Anous minutus	LC	breeding	2004	25,000 individuals	A4i
A4iii Species group - waterbirds	n/a	breeding	2004-2005	32,500 individuals	A4iii

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 (2018) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	likely in long term (beyond 4 years)	whole area/population (>90%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	slow but significant deterioration	high
Human intrusions and disturbance	past (and unlikely to return) and no longer limiting	whole area/population (>90%)	very rapid to severe deterioration	low
Biological resource use	past (and unlikely to return) and no longer limiting	majority/most of area/population (50-90%)	very rapid to severe 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90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium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
2001	Helen Reef	Reserve	100

Habitat1	Habitat detail	% of IBA
Forest	Beach and atoll forest	major (>10)
Marine Intertidal		major (>10)
Marine Neritic		-

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	major (>10)

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Helen Island, Hatohobei (Palau). Downloaded from https://datazone.birdlife.org/site/factsheet/helen-island-hatohobei-iba-palau on 23/11/2024.