2003 年 52 巻 1 号 p. 32-34
Distribution of feeding sites of wintering Greater White-fronted Geese Anser albifrons around Lake Izunuma-Uchinuma (roost) was determined by direct observations during winter of 1997, 1998and 1999. The 68.6% of 110feeding flocks were observed in rice fields within 6km from the lake.