红角鸮种群数量及繁殖生态的调查研究

红角鸮在山西省内分布广泛,笔者于2008年至2010年在阳圪台林场对红角鸮的迁徙、种群数量、繁殖特性、栖息地和食物组成等进行了生态调查,结果表明,红角鸮在山西省的迁徙特点是每年最早迁入的日期差异为2 d~4 d,最晚迁离的日期差异为1 d~4 d,居留期为162 d~167 d,间隔期为198 d~204 d;红角鸮繁殖季前的种群数量为0.75只/km2,繁殖季后为1.08只/km2;鼠类、两爬类、昆虫类等为其主要食物。

Investigation Research on Population Quantity and Reproduction Ecology of Otus scops

Otus scops were widely distributed in Shanxi Province .The ecological survey of migration , population , reproduc-tive characteristics , habitat and food composition of Otus scops were carried out in 2008~2010.The results showed that Otus scops migration feature in Shanxi Province was that the time difference of the annual move was between 2 d~4 d, the time difference of the annual eviction was between 1 d~4 d, residency period was162 d~167 d and interval was198 d~204 d;population number of Otus scops was 0.75/km^2 before the breeding season , 1.08/km^2 after the breeding season;muroids, two climbing classes , and other insects were its main food .