杂斑腹小鴞实为鬼鴞

Based on two specimens collected from Sichuan Province,Yang et al.(1989) described a new subspecies of the spotted little owl(Athene brama),the belly-mottled littlc owl(Athene brama poikila).This subspecies has been asknowledged by Cheng(2000),However,Cheng(2000)also mentioned that further work should be done on this subspotted little owl and the boreal owl(Aegolius funereus).The boreal owl is identifiable from its rather square facial disc,however,this character was destroyed during the facture for these two speciments of Athene brama poikila.That is the reason Yang et al.(1989) missed them with the genus Athene.The genus Aegolius is also identifiable from the genus Athene from the character on the toes,as the toes of the boreal owl are covered with thick feathers.whereas the toes of the little owl are bristled.The toes of these two specimens of Athene brama poikila are thickly feathred,corresponding to the identification of the genus Aegalius.The morphological characters and measurements of the two specimens also correspond to the boreal owl.The habitat of the two specimens was reported as conifer deciduous forest around 2200 m to 3100m,which fits the habitat of boreal owl.The distribution of the endemjic Gansu subspecies of the boreal owl(A.f.beickianus)was reported at Tiantangsi,Lianhuashan in Gansu,Guinan in Qinghai and Jiuzhaigou in Sichuan in China,It was also reported at Lahul in north India,Sun et al.(2001) suggested that it is probably the boreal owl is also distributed in the conifer forest of west Sichuan and east Tibet.the new distribution point in Baoxing and Yajiang in Sichuan corresponds to this conjecturc.As a conclusion,we believe that thest two spccimens should belong to the A.f.beickianus of the borcal owl.     

长耳鴞越冬栖息地环境因子分析

通过对河北省保定市直隶总督署博物馆越冬长耳种群数量和习性的长期观察及其越冬栖息地环境因子的分析 ,得出如下结论 :总督署博物馆虽地处保定闹市中心 ,但由于其建筑格局等因素影响 ,院内噪声值、大气中的二氧化硫、氮氧化物、总悬浮物微粒的含量明显低于院外 ;博物馆院内种植有多株高大的常绿乔木 ,为长耳提供了良好的栖息、隐蔽场所 ;越冬长耳种群数量的变动与温度有一定的对应关系 ;近年来在总督署博物馆大院内越冬栖息的长耳数量有较大波动 ,且有下降趋势 ,这与总督署博物馆的改建、游客数量增多、食物短缺及冬季气温升高等因素有关