怒江河谷栗喉蜂虎的繁殖行为观察

2007年3月26日—7月16日，采用典型野外记录法和所有事件取样法对云南省保山市道街怒江河谷栗喉蜂虎繁殖行为进行了观察。结果表明：1）产卵期雄性栗喉蜂虎求偶喂食的食物以蜻蜓目和膜翅目昆虫为主，占83.56%；雌鸟接受喂食的可能性为96.83%，接受喂食后仅有17.49%的雌鸟与雄鸟进行交配。2）在孵卵期昼间，雄鸟每次坐巢的时间为（23.521.6）min，每日坐巢的时间占54.4%；雌鸟每次坐巢的时间为（25.811.5）min，每日坐巢的时间占42.1%，雌雄鸟每次坐巢的时间无明显差异。3）幼雏出壳后亲鸟对幼雏的暖雏时间逐日减少，至第20 d亲鸟不再暖雏。栗喉蜂虎的育雏期为29～33 d，在繁殖过程中帮助喂食的鸟确实能提高被助鸟的繁殖成功率。

Breeding Behaviors of Blue Tailed Bee-eater of Nujiang Valley

By the method of ad libitum sampling and all-occurrence recording, breeding behaviors of Blue Tailed Bee-eater in the Agricultural Region of Nujiang Valley were observed from 26th March to 17th July, 2007. The result showed the most common foods that male birds fed to female birds are Odonata and Hymenoptera insects, accounting for 83.56%. The frequency of females accepting the food provided by males was 96.83%, and the frequency of copulation was 17.49% following food acceptance. During the daytime of the ...