摘要
本文作者于1982～1991年,在庞泉沟国家级自然保护区对我国二级重点保护动物(周鸟)鸮(Bubo bubo ussuriensis)的种群密度及繁殖进行了调查研究。证实了该鸟栖于山地疏林间,两小时四公里遇见数为0.458只。3～6月份繁殖,每窝卵数2～3枚,4月上旬开始产卵,每隔2～3天产卵一枚,孵卵期38.5天左右,孵化率为90.91%。食物以动物性为主,兽类、家畜尸体、鸟类和爬行动物分别各占55.473%、74.65%、35.523%和1.673%。
The authors studied the population density and breeding of Bubo bubo ussuriensis that belong to the Nation sec- ondlevel protective animals in Shanxi Pan Quan Gou National Natural Protection Areas from 1982 to 1991.The re- sults as follows:this bird perch on the trees in the mountain and forest regions,breed between March and June,lay eggs in April and 2-3 eggs in each nest.The incubation period is 38.5 days and hatching rate is 90.9%.They live mainly on some small mammals,some other birds and some reptiles,such as Lepus europaeus,Corvus macrorhynchus colonorum and so on.
关键词
雕Xiao
种群
密度
孵化率
繁殖
Bubo bubo ussuriensis
Population density
Hatching ratio
Feeding habit
Reproduction.
