架空输电线路杆塔黑领椋鸟和喜鹊的巢址选择

2018年3～6月,对南昌市郊区输电线路杆塔上的黑领椋鸟和喜鹊的巢址选择进行调查.黑领椋鸟的营巢距灌丛和乔木的距离分别为(1.81±2.10)m和(11.13±7.20)m,均显著高于喜鹊距灌丛(0.22±0.67)m和乔木(6.22±4.29)m的距离,其余各参数差异无统计学意义.结果表明这2种鸟类巢址选择偏好相似.主成分分析表明:黑领椋鸟巢址选择的第1主导因子是安全因子(距干扰源距离、巢高度)和食物因子(距农田距离),影响喜鹊巢址选择的第1主导因子是安全因子和水因子(距水源距离).这2种鸟类对巢址选择的需求相似.

The Nest-Site Habitat Selection of Sturnus nigricollis and Pica pica on the Tower of Electric Transmission Lines

The nest-site habitat selection of Sturnus nigricollis and Pica pica on the tower of electric transmission lines is studied from March to June of 2018.The results show that the distance to shrub and trees for Sturnus nigricollis is significantly larger than that of Pica pica.Other factors has no significant difference,which indicates that these two species have the similar nest-site preference.Principal component analysis shows that the first principal factor for Sturnus nigricollis is security factor(distance to disturbance source and nest height)and food factor(distance to farmland).And the first principal factor for Pica pica is security and water factors(distance to water source).These two bird species had the similar requirements in nest-site selection.