• 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
Brown Noddy Anous stolidus	LC	breeding	1973	80,000 individuals	A4i
Black Noddy Anous minutus	LC	breeding	1973	20,000 individuals	A4i

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
Brown Noddy Anous stolidus	80,000	80,000	individuals	100	not assessed
Black Noddy Anous minutus	20,000	20,000	individuals	100	not assessed

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%)	slow but significant deterioration	medium
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	no or imperceptible deterioration	low
Biological resource use	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	negligible

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tench Island (Papua New Guinea). Downloaded from https://datazone.birdlife.org/site/factsheet/tench-island-iba-papua-new-guinea on 23/11/2024.