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J Wildl Dis.: Mortality factors and diseases in free-ranging Eurasian cranes (Grus grus) in Germany.

Detailed postmortem examinations were performed on 167 free-ranging Eurasian cranes (Grus grus) from Germany, collected between September 1998 and December 2008 to evaluate causes of death and diseases. The most common causes of mortality were traumatic injuries (n = 105, 62.9%) from collisions with power lines (n = 39, 23.4%) and wire fences (n = 12, 7.2%). A group of 28 Eurasian cranes (16.8%) died from organophosphate intoxication. Predation by white-tailed sea eagles (Haliaeetus albicilla) and red foxes (Vulpes vulpes) occurred in 4 cases (2.4%). Pathologic changes due to infectious diseases were associated with Aspergillus spp. (n = 7, 4.2%), endoparasites (n = 7, 4.2%), avian poxvirus (n = 6, 3.6%), Mycobacterium spp. (n = 2, 1.2%), and adenovirus infection (n = 1, 0.6%). A severe Strigea spp. infection (n = 1,0.6%) and a leiomyosarcoma (n = 1, 0.6%) were newly recognized diseases in Eurasian cranes in this study.

2011;47:627-637.

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Author:Fanke, J.; Wibbelt, G.; Krone, O.
Publication:Journal of Avian Medicine and Surgery
Article Type:Report
Geographic Code:1USA
Date:Sep 1, 2011
Words:155
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