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Location Japan, Hokkaido
Central coordinates 141o 56.00' East  42o 35.00' North
IBA criteria A4i
Area 3,800 ha
Altitude 0 - 5m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Mukawa is located in the southwest of Hokkaido. Around 90% of the tidal flat that existed until 1970s has vanished due to erosion. However, citizens, specialists and administration are now planning to restore the environment, through erosion control and developing man-made tidal flats and so on. Shorebirds are seen at those tidal flats and fresh water ponds. White-fronted Geese that fly to Lake Utonaiko and Yufutsu plain feed on surrounding paddy fields.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greater White-fronted Goose Anser albifrons passage  2004  present  A4i  Least Concern 

IBA Monitoring

2010 low not assessed negligible
Medium - based upon reliable but incomplete / partially representative data

No known threats no known threats happening now whole area/population (>90%) no or imperceptible deterioration low

Some of site covered (10-49%)  Unknown  Unknown  negligible 


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial Rice paddies  -
Wetlands (inland) Estuarine waters  -

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Mukawa. Downloaded from on 08/10/2015

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