【摘要】 笔者于2006年3～4月对吉林莫莫格国家级自然保护区的夜鹭的巢区结构进行研究。研究内容包括夜鹭巢的数量、巢间距、巢位高、每棵树上的夜鹭巢数及分布类型等。结果表明夜鹭筑巢主要选择树高20．04m(±1．96m)、树径20．9cm(±3．3cm)且离水源较近的杨树林,巢位置在距地面高度为19．81m(±1．26m),距树顶的距离为2．23m(±1．47m)。夜鹭巢的巢间距6．27m(±3．64m),且50．9％夜鹭选择一棵树上仅筑一个巢。夜鹭巢分布状态服从集群分布。更多还原

【Abstract】 Nest site structure of the Night Heron,a medium-sized bird and wide distributed in most provinces of China, was studied during March and April,2006 in Monoge National Nature Reserve,Jilin province.Following items in the nest site structure were recorded:height of trees selected for nesting 20.04m±1.96m;diameter of trees at chest 20.9cm±3.3cm;height of nest from the ground 19.81m±1.26m and 2.23m±1.47cm below the top of trees;distance between two nests 6.27m±3.64m;one nest per tree 50,9%;in poplar forest near water source and nests of clumped distribution.更多还原