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Location Japan, Hokkaido
Central coordinates 139o 48.00' East  41o 21.00' North
IBA criteria A4i, A4ii, A4iii
Area 115 ha
Altitude 0 - 300m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Matsumaekojima islet is located at 24 km off shore of Matsumae Town, southwest of Hokkaido. It is an uninhabited islet of about 4km perimeter. Most parts of the islet are grasslands, with Acer mono at Goten basin on the crater area. Coastal parts are all steep cliffs and so it will be impossible to come to the islet by sea. The colony of Rhinoceros Auklet, that used to be at the west side of Benten Shrine, has moved to the coast of Mt Kitadake. Around Matsumaekojima islet, there are large and small islets such as Daihiyakushima, Shohiyakushima, Tenjinshima and Sazaeshima. Many seabirds breed here.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black-tailed Gull Larus crassirostris breeding  2004  present  A4i  Least Concern 
Rhinoceros Auklet Cerorhinca monocerata breeding  2004  present  A4ii  Least Concern 
A4iii Species group - seabirds breeding  2004  min 10,000 breeding pairs  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Matsumae (Hokkaido) Fisheries Resources Protected Area 14 unknown 0  


IUCN habitat Habitat detail Extent (% of site)
Grassland   -
Coastline Sea cliffs and rocky shores  -

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Recommended citation  BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Matsumae islets. Downloaded from on 30/11/2015

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