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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	A pilot study for the reintroduction of the Capercaillie Tetrao urogallus in the Lower Lusatia region - a first interim report
Auteurs :	Uwe Lindner, Auteur ; Lars Thielemann, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (134(1, Sp. Iss. SI) 2013)
Article en page(s) :	83-91
Résumé :	Capercaillie historically occurred in the lowland of East Germany once in the so-called pine heathland belt (Kiefernheidegurtel). In the middle of the 19th century the total population of Capercaillies ranged from 550 to 600 animals in the area called Lusatia, which nowadays belongs to the federal state of Brandenburg. All major populations in the south of Brandenburg disappeared before 1950. The remaining population was circularly concentrated around the city of Finsterwalde. The last free ranging Capercaillie in the region of Lower Lusatia was observed in October 1998. The main causes for the population decline in S Brandenburg were the intensification of forestry, habitat deterioration caused by open coal mining and the military use of forests. Within the framework of an official species protection programme, in November 2011 a pilot study for the reintroduction of Capercaillies in the region of Lower Lusatia was initiated. It was planned to release 30 wild Capercaillies captured in Sweden in an area called "Liebenwerdaer Heide" in 2012 and another 30 birds in the area of "Rochauer Heide" in 2013. Within the context of scientific documentation, the progress of the relocation will be analysed over the project period of three years. Some aspects which are to be examined are e.g, analysis of the dispersal of the released birds, habitat use and reproduction activities. In May and October 2012, 28 hens from Sweden were already released in the "Liebenwerdaer Heide". After relocation to the new area, most of the hens went through an orientation phase of 4-6 weeks before they settled for a longer time in a specific area. Some hens moved more than 30 km away from their release points and even changed between neighbouring forestal areas. Here, some hens moved more than 10 km across open habitat. It is confirmed that until March 2013, 12 of the 28 released hens have died. Six hens were killed by predators (four by Northern Goshawk, two by Red Fox or marten), two hens collided with a radio pole and a power line, respectively, and one was killed by a domestic dog in a garden. The causes of death of three hens could not be established. If the current project study yields results which justify a reintroduction of Capercaillies in the region of Lower Lusatia, translocation should be continued until the re-establishment of a self-sustaining population in Lower Lusatia is achieved.

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