Habitat Selection. Nest Site Selection; Territoriality; Dispersal; Migration.
栖息地选择。巢穴选择；地盘；分布；迁移。
Then it is analyzed that the pertinence of nest site selection of magpie and urban green space using principal component analysis and singe factor analysis approach.
通过主成分分析和单因子分析的方法分析喜鹊营巢特征与城市绿地环境的相关性。
There are 9 factors which affect nest-site selection.
影响巢址选择的主要因素9种；
There exists resource partition in nest-site selection among grassland birds, there are three guilds: nesting in higher and denser grass birds guild;
通过草原鸟类在巢位选择时对巢址资源分割的研究，揭示了草原鸟类群落的集团结构，共分为三个集团，即：高密度、高草营巢鸟类集团；
The nest-site selection of Great Bustard is strict, it mainly selects the grassland with small hill which with gradient slow and nest above the middle parts of hill.
大鸨巢址选择严格，多选择在岗坡的中部以上、坡度较缓的草原上营巢。
The nest-site selection of Great Bustard is strict, it mainly selects the grassland with small hill which with gradient slow and nest above the middle parts of hill.
大鸨巢址选择严格，多选择在岗坡的中部以上、坡度较缓的草原上营巢。
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