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

The site was identified as important in 2004 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
Streaked Shearwater Calonectris leucomelas	NT	breeding	2003	present	A4ii
A4iii Species group - seabirds	n/a	breeding	2003	min 10,000 breeding pairs	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Energy production and mining	likely in long term (beyond 4 years)	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
Some of site covered (10-49%)	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	medium

Year	Protected Area	Designation	% overlap with IBA
1973	Kusagakijima	国指定鳥獣保護区	42

Habitat1	Habitat detail	% of IBA
Forest		-
Marine Coastal/Supratidal		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Kusagaki islets (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/kusagaki-islets-iba-japan on 23/11/2024.