Territory density of the Skylark (Alauda arvensis) in relation to field vegetation in central Germany

作者: Stefan Toepfer , Michael Stubbe

DOI: 10.1046/J.1439-0361.2001.00061.X

关键词:

摘要: The Skylark (Alauda arvensis) is one of the most common birds in German farmlands. Recently populations declined rapidly in some regions. This new situation demands further …

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