Abstract
Ringed Plover is a rare migratory or wintering bird in Japan. One Ringed Plover wintered at the mouth of Kawashiri River, Taturuhama, Nanao-Nishi bay, Ishikawa prefecture (37°10′N, 136°90′E) from 25th October 1988 through 20th April 1989. It seems that study area and unfrozen parts of the Gamou tidal flat are the northern limit of their wintering regeon in the Far East for this species. In this survey, the bird prefered tidal flats to paddyfieled. It foraged mainly on polychaeta worms and the other smaller items. From October 1988 to December 1988, we couldn't find any characteristics to age sex it. Breast-band and mask patterns in summer plumage suggested it to be an adult male.
