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Location Japan, Niigata
Central coordinates 139o 14.00' East  37o 50.00' North
IBA criteria A4i, A4iii
Area 310 ha
Altitude 0 - 5m
Year of IBA assessment 2004

Wild Bird Society of Japan



Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta 2004  present  A4i  Least Concern 
Tundra Swan Cygnus columbianus 2004  present  A4i  Least Concern 
Mallard Anas platyrhynchos 2004  present  A4i  Least Concern 
A4iii Species group - waterbirds unknown  2004  20,000 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Hyo-ko Wetlands of International Importance (Ramsar) 24 protected area contained by site 24  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Freshwater lakes and pools  -

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Lake Hyoko. Downloaded from http://www.birdlife.org on 19/09/2014

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