Abstract
Fifteen species of shorebirds were observed at Oguchi Lotus Plantation, Nakanoshima, Niigata Prefecture. Fluctuations in the number of individuals were recorded for 1990 and 1991. The data showed that flocks were largest during the spring migration period, with 1,000 Spotted Redshans, 200 Dunlins and about 50 Common Snipe recorded. Autumn flocks were much smaller, and only a few scattered recordings were made during the winter months. No shorebirds were recorded for the summer months.