摘要
论述豫北黄河故道湿地鸟类自然保扩区大天鹅越冬情况，通过多年野外观察和研究，基本弄清了该保护区大天鹅的越冬生态习性、食性及数量分布。
This paper deals with the overwintering habit and characteristics of Cygnus cygnus at the wet land Bird′s Reserve of the old course of the Huanghe River in north Henan province.According to the wild observation and research for several years,the ecological habits,food habits,number and its distribution of Cygnus cygnus in the Reserve has been studied clearly.The paper also gives some suggests of the conservation to Cygnus cygnus .
出处
《河北师范大学学报（自然科学版）》
CAS
1997年第3期314-316,共3页
Journal of Hebei Normal University：Natural Science
