鸭绿江河口湿地鸟类观察

本文以详实的调查记录，提示了鸟类春秋迁徙的种群特征．旅鸟常集大群迁飞，晚走的夏候鸟则多单独活动；某些鸟类也常成对活动；集群大小与取食地大小、人类干扰程度有很大关系．

Birds at the Wetland in Yalu River Estuary

This paper reports the populaion charateristics of bird migtation withfull and accunde wterha- Non-breeding birds migrate in large groupsyet breeding birds are often seen alone. Some birds often fly and look forfood in pairs. The feeding area and the disturbance of man have import-ant bearing on the sise of population.