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Article
Tobias Ludwig, Auteur ; Siegfried Klaus, AuteurThe Hazel Grouse (Tetrastes bonasia) is a cryptic forest-obligate bird species with special habitat requirements, including structured mixed forests at the local scale and good connectivity at the landscape level. These conditions are rarely met[...]
Article
Christoph Unger, Auteur ; Siegfried Klaus, Auteururing winter (October-April) of 2002 to 2005 roosting trees of Capercaillie (n=91 males, n=29 females) in the Thuringian slate mountains were analysed. In the study area, pine Pinus silvestris was the dominating tree species (67 %,) followed by [...]
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
Ralf Siano, Auteur ; Siegfried Klaus, AuteurSince 1950, more than 4,800 Capercaillies have been released in the course of 11 release projects in different parts of Germany. Eight projects have been finished, only three ate still in progress (Thuringia, Higher Sauerland and Lower Lusatia).[...]
Article
Ralf Siano, Auteur ; Siegfried Klaus, AuteurSince 1950, more than 4,800 Capercaillies have been released in the course of 11 release projects in different parts of Germany. Eight projects have been finished, only three ate still in progress (Thuringia, Higher Sauerland and Lower Lusatia).[...]
Article
Siegfried Klaus, Auteur ; Hans-Heiner Bergmann, AuteurThe Hazel Grouse is mainly threatened by habitat loss as result of inadequate forest management (large clear-cuts, coniferous monocultures, ceasing of coppice forest use) and habitat fragmentation. The current distribution (map Fig. 1, c. 2000-4[...]
Article
Nan Yang, Auteur ; Kai Zhang, Auteur ; Huw Lloyd, Auteur ; Jianghong Ran, Auteur ; Yu Xu, Auteur ; Beibei Du, Auteur ; Bisong Yue, Auteur ; Ying Wang, Auteur ; Siegfried Klaus, AuteurYang N., Zhang K., Lloyd H., Ran J., Xu Y., Du B., Yue B., Wang Y. & Klaus S. 2011. Group size does not influence territory size and overlap in a habituated population of a cooperative breeding Himalayan Galliforme species. Ardea 99: 199-206. Un[...]
Article
Siegfried Klaus, Auteur ; Hartmuth Hoffmann, Auteur ; Prinz Reuss Heinrich, AuteurHazel Grouse Bonasa bonasia - reintroduction in the Thuringian Frankenwald (Germany)In 2001, a hazel grouse (extinct in the late 19 century) release project was started by the Prinz Reuss' forest administration, Wurzbach. Main management activit[...]
Article
Christoph Unger, Auteur ; Siegfried Klaus, AuteurLife expectancy and causes of death of relocated Capercaillies Tetrao urogallus in ThuringiaAs compensation for damage to capercaillie Tetrao urogallus habitat in Thuringia, eastern Germany, through the construction of two new reservoirs, an ele[...]
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
Christoph Unger, Auteur ; Siegfried Klaus, AuteurBetween 1999 and 2003, 145 Western Capercaillies caught in the wild in Russia were translocated to the Schiefergebirge area of Thuringia (Germany). The birds came from the Yaroslavl' and Kostroma areas, c. 260 and 320 km NE Of Moscow.Control of [...]
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[...]
