Reference
Siegfried Klaus, Yingqiang Lou, Yun Fang, Wolfgang Scherzinger, Yue-Hua Sun (2014): Aggressive interactions between males of Chinese Grouse Tetrastes sewerzowi in autumn at Lianhuashan natural reserve, Gansu, Central China – Ornithologischer Anzeiger – 53_1-2: 45 - 53.