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Location Japan, Tokyo
Central coordinates 139o 16.00' East  34o 22.00' North
IBA criteria A1, A2, A4ii
Area 2,686 ha
Altitude 0 - 432m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Niijima village consists of Niijma, Shikinejima and the other uninhabited islets. Niijima, which is located about 150 km south of Tokyo metropolitan area, is a narrow island formed within the range of two volcanos, Mt Miyatsukayama on the north and Mt Mukaiyama on the south. Shikinejima is an island with terracing, located about 6 km south of Niijima. It is formed of rhyolite mainly, and the ria coastline also has Pinus thunbergii forests.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Japanese Murrelet Synthliboramphus wumizusume breeding  2004  present  A1, A4ii  Vulnerable 
Japanese Woodpigeon Columba janthina resident  2004  present  A2  Near Threatened 
Pleske's Grasshopper-warbler Locustella pleskei breeding  2004  present  A1  Vulnerable 
Izu Leaf-warbler Phylloscopus ijimae breeding  2004  present  A1, A2  Vulnerable 
Izu Thrush Turdus celaenops resident  2004  present  A1, A2  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Fuji-Hakone-Izu National Park 122,690 protected area contains site 2,686  


IUCN habitat Habitat detail Extent (% of site)
Forest   -
Coastline Rock stacks and islands  -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Niijima and Shikinejima Islands. Downloaded from on 24/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife