大鸨野外生态的初步观察

Ecological study of Otis tarda

于 2 0 0 0年 4月至 2 0 0 1年 7月 ,在白城地区镇赉县大岗林场以北草原上对大鸨的野外习性进行了观察 .大鸨 3月末迁来本地进行繁殖 ,1 0月末迁去 ,每年的 5月初至 6月中旬产卵 ,每窝产卵 2～ 5枚 ,雌鸨孵卵 ,孵卵期 3 0～ 3 5d .刚迁来时大鸨以植物为食 ,进入繁殖期后 ( 6月份 )以动物性食物为主 .

From April 2000 to June 2001,observed the habits and characteristics of Otis tarda in Beidagang forestry farm of Zhenlai County in Jilin province.Found out that Otis tarda move to locality to reproduce by the end of March,and migrate to another place by the end of October.They lay eggs from the beginning of May to middle of June,each time they lay 2 or 5 eggs. The incabation peried is about 30 or 35 days.At the begimming of their arrival,they live on the seeds of plants.During the reproction period,they live on animal food.