【摘要】 <正> 小白腰雨燕Apus affinis subfurcatus广布于云南省南部以及东西部部分地区,在城镇的建筑物上营巢。野外森林、果园、农田等地上空可见小白腰雨燕活动。为了确定与人类的关系怎样,1963—1964年在蒙自研究小白腰雨燕繁殖习性的同时,对成鸟全年食性也进行了研究。现将定期采到的124只小白腰雨燕剖胃检查所获资料分析统计报告如下。更多还原

【Abstract】 Through the examination of the stomach contents of 124 house swifts secured in Mengzi, Yunuan province during 1963-1964, it has been ascertained that the house swifts are essentially insect-eating birds. The insect matter occupies about 98.83% of the total amount of the food taken by them through the year (except January) .The above mentioned insect matter are found to belong to 11 orders of insects in the adult birds and 14 orders in the young birds. Among these orders, only five of them, such as Coleoptera, Hemiptera, Diptera, Hymeno-ptera and Homoptera are the most common ones, They occupy about 91.96% in the adult and 80.46% in the youny birds of the total amount of the food taken.Most of these insects (about 87.67% of the adult and 67.37% of the young) are pests to agriculture and disease-spreading ones. The house swifts are, therefore, beneficial birds with economical significance and deserve our protection.更多还原