decline of game birds (phasianus colchicus and perdix perdix) in bavaria: a survey on pathogenic bacteria, parasites, pesticide residues, and influence of set-aside land and maize cultivation.due to a europe-wide decline of grey partridge ( perdix perdix ) and pheasant ( phasianus colchicus ) populations, this study was conducted focusing on the county of bavaria, south germany. the aim was to assess the health status of game birds and identify possible causes of decline. for this purpose 203 pheasants and 11 partridges were examined during the 2011 hunting season. pathologic examinations were conducted including examinations for parasites and bacteria. due to public health significa ...201728363041
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