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Article
Pengfei Liu, Auteur ; Huw Lloyd, Auteur ; Yingqiang Lou, Auteur ; Yuehua Sun, AuteurMany bird species produce low-amplitude acoustic signals, known as soft songs, which are widely believed to function primarily in aggressive interactions. However, there are surprisingly few experimental studies that have examined whether soft s[...]
Article
Siegfried Klaus, Auteur ; Yingqiang Lou, Auteur ; Yun Fang, Auteur ; Wolfgang Scherzinger, Auteur ; Yue-Hua Sun, AuteurIn 38 aggressive encounters observed in autumn77 males were involved. The duration of encounters varied in a wide range (2-77 min, mean 19.7 min). Most of the aggressions occurred on ground (n = 21, respectively
