Fall Migration Dynamics of Birds on Fenghuang Mountain, Yunnan Province, China|
HAN Lian-xian, HUANG Shi-lin, YUAN Yu-chuan, QIU Yun-long
During the falls of 2002 and 2003, we studied the migration dynamics of birds using mist nets, on Fenghuang Mountain, Yunnan Province, China. A total of 6 677 individuals, which included 176 species belonging to 29 families and 13 orders, were caught and banded. The night bird migration on Fenghuang Mountain started in early August and finished in mid-November approximately. This migration period can be divided into the beginning stage, maximum stage and finishing stage. Among these stages, the maximum stage was from mid-September to early October. The night-time migration began approximately one hour after sunset and finished at dawn. There were two peaks during the night. The first occurred from 20:30 to 24:00, and the second occurred from 4:00 to 5:30. The day-time migration began in mid-October (beginning stage), and rose to the maximum stage from the last ten days in October to the first ten days in November. The finishing stage was from mid-November to the beginning of December. In the daytime, migration began from approximately one hour before sunrise, and then rose to the peak between 8:00 and 9:30. The migrants decreased gradually until 11:00. The migration period continues for about 100 days on Fenghuang Mountain. The migrating occurred during three migration peaks in nights, which are foggy, have southwest winds and no moonlight, but only one migration peak during all other nights.
Bird; Migration schedule; Quantity changes; Nanjian; Yunnan; China