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Article
Jin-Ming Zhao, Auteur ; Yun Fang, Auteur ; Ying-Qiang Lou, Auteur ; Jon E. Swenson, Auteur ; Yue-Hua Sun, AuteurReproductive activities can incur various costs to breeding individuals in birds. One cost is that reproduction decreases survival probabilities of attendant individuals, which may have a major effect on population demography. During brood reari[...]
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
Article
Jie Wang, Auteur ; Chen-Xi Jia, Auteur ; Song-Hua Tang, Auteur ; Yun Fang, Auteur ; Yue-Hua Sun, Auteur
Article
Yue-Hua Sun, Auteur ; Yun Fang, Auteur ; Chen-Xi Jia, Auteur ; Siegfried Klaus, Auteur ; Jon E. Swenson, Auteur ; Wolfgang Scherzinger, AuteurDuring 1995-2004, we studied the nest site selection of the Chinese grouse Bonasa sewerzowi at Lianhuashan, Gansu, China. Of the 103 nests that we found, 56% were at the base of deciduous trees, mainly willow Salix spp. and birch Betula utilis, [...]
Article
Wolfgang Scherzinger, Auteur ; Yun Fang, Auteur ; Yue-Hua Sun, Auteur ; Siegfried Klaus, AuteurIn autumn of 1869, Father A. David collected several owls in western Sichuan/China. Sharpe (1875) recognized a new species in one of these birds and named it Syrnium davidi. Since this time, only very few records and observations had been made, [...]
Article
Jie Wang, Auteur ; Yun Fang, Auteur ; Siegfried Klaus, Auteur ; Yue-Hua Sun, AuteurBoth the quality of food and the rate of food intake may influence an animal's food choice. We investigated the feeding choices of Chinese Grouse (Bonasa sewerzowi) among a group of trees/shrubs with similar morphologies but heterogeneous chemic[...]
Article
Chen Yang, Auteur ; Yun Fang, Auteur ; Yue-Hua Sun, AuteurWinter movement and social behavior of Chinese Grouse (Bonasa sewerzowi) were studied at Lianhuashan Natural Reserve, northwest China from 1995 to 2009. According to radio-tracking data from 25 male Chinese Grouse, their home ranges in winter ra[...]
