In passerine birds, song is widely used broadcasting signal. One song trait that so far has received little attention is amplitude, i.e. the sound pressure level of a song. It has been shown that t...

中文翻译：

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两种同域莺的歌声振幅和种群密度，Phylloscopus schwarzi 和 P. fuscatus

在雀鸟中，歌声是广泛使用的广播信号。迄今为止很少受到关注的一个歌曲特征是振幅，即歌曲的声压级。已经表明，...