Abstract
Among 70 species shorebirds flying to Japan, 13 spices are recognized as threatened species. In this research, distribution of potential habitat was studied for protecting those 6 spices in coastal area of Kyusyu region was estimated. The shorebird monitoring data named ‘Monitoring Sites 1000’ and land use data in coastal area were used. The result of analysis using MaxEnt showed that river, lake and tidal flat area were positive but urban area and forest area were negative. The predicted potential habitats were coastal area of Ariake Sea, Suonada, Yatsushirokai Sea, Hyuganada and Amami-Oshima area. However, registering at sanctuary or nature reserve are just small areas among those areas. A number of periodical shorebirds survey was small in Hyuganada and Amami-Oshima area. In order to protect the threatened species, there is a need to designate potential habitats as sanctuary or nature reserve with consideration of enough surveys of the areas and surrounding environment.