Okinoshima and Koyajima islets

Country/territory: Japan

IBA Criteria met: A1, A2, A4ii (2004)
For more information about IBA criteria please click here

Area: 97 ha

Protection status:

Wild Bird Society of Japan
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2015 high not assessed medium
For more information about IBA monitoring please click here

Site description
Okinoshima is an islet off of Fukuoka City having an area of 85 ha. The northwest and south sides of the islet are covered with deep forests mainly composed of Machilus tunbergii. Koyajima is a rocky reef situated about 1km south-southeast of Okinoshima. There are no trees covering the rocky reef leaving it almost naked except Carex oahuensis.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Okinoshima and Koyajima islets. Downloaded from on 30/10/2020.