抄録
This paper provides the first record of Brown-eared Bulbuls observed in spring in the sub-alpine/alpine zone of Japan. This speciesBird is very common and resident all over Japan (including the footbase of Mt. Fuji), while there is no information about its visit to a sub-alpine/alpine zone. We report the seasonal abundance pattern of the Brown-eared Bulbul Hypsipetes amaurotis in the sub alpine-zone of Mt. Fuji, central Japan. Brown-eared Bulbuls were observed only on 3 days in late April and early May during the 40 surveys conducted between April and October 2003. This is a different seasonal pattern from 112 that of resident bulbuls in common habitats. The birds were observed in a flock (of 4-8 individuals) on the three occasions. Some previous studies of bulbul seasonal movements showed that bulbul populations consist of resident and migrant individuals. The bulbuls observed in the study site are most likely migrants because of their seasonal pattern and behaviour.
