Abstract
We report a recent increase in the number of visiting Snow Geese Anser caerulescens as passage migrants visiting Mawarizeki Pond, Aomori Prefecture, Japan. Between 2005 and 2015, we counted the number of geese 1 to 2 times per week during October through December. The annual number of geese visiting this site grew rapidly, concurrently with the population increases observed at other rest sites in Japan. Mawarizeki is a pond with a large area of adjacent farmland, and it seems to offer an appropriate rest site for flocks of this species during autumn migration along the route from Urahoro, Hokkaido, to Hachirogata, Akita.
