乌鸫繁殖生态的研究

This paper reports breeding ecology of Blackbird(Turdus merula mandarinus) in Feixi County,Anhui Province from March to July of 1996.The bird nested in resident quarters earlier than in forests.In the case of breeding in forests,they neted on the trees at the edge of forests near pond.They were compatible with large birds such as heons.The parent-birds attacked violently anyone who contacted their young birds.There were only a few nestlings growing up to leave their nests.Survval rate was determined mainly by weather.The equation of the growth of body weight was W=77 3/[1+e -0 472(t-6 4) ].Compared with the other passerines,such as Blue-winged Pitta and Red-rumped Swallow,nestlings of Blackbird grew up rapidly,leaving their nest with lighter body mass.For the first time,Cuckoo was found laying egg in the nest of Blackbird in China.

紫蓬山区三种鹭繁殖生物学研究

作者报道了１９９６年４～７月紫蓬山区的池鹭、白鹭和夜鹭的繁殖行为和雏鸟的食性及生长。结果表明：巢前期三种鹭取食地点远离巢区；求偶方式主要有婚飞、显示饰羽、求偶喂食和象征性营巢行为；获得巢材的方式不同；异步产卵，异步孵化；雏出孵前，白鹭和夜鹭有迅速加固和扩大巢的行为；育雏期，取食大小随雏鸟日龄增大而增大，取食距离随雏期延长而缩短。三者雏鸟体重增长的数学模型分别为：ｗ＝２０５．１ｅ－（０．０６５ｅ）－０．０６５ｅ（ｔ－６．０），ｗ＝３２３．４ｅ－（０．０５８ｅ）－０．０５８ｅ（ｔ－６．６），ｗ＝５１９．３ｅ－（０．０４７ｅ）－０．０４７ｅ（ｔ－８．５）。雏鸟体重增长率都与成体体形的大小呈负相关。池鹭雏鸟的食物主要是鱼类和昆虫，白鹭雏鸟的食物主要是鱼类和甲壳类，夜鹭雏鸟的食物主要是两栖类和鱼类。首次报道了夜鹭以雏鸟和鼠类育雏。