Causes of mortality among wild swans in Britain
نویسنده
چکیده
Post mortem data from 366 dead swans recovered from the wild between 1951 and 1989 were examined. The main causes o f death were flying accidents ( accounting for 22% o f adult deaths and 23% o f juveniles), lead poisoning (in 21% o f adults and 10% o f juveniles), trauma (in 8.4% o f adults, 8.7% o f juveniles and 30% o f Mute Swan downies), tuberculosis (6.0% o f adults and 1.0% o f juven iles ) and aspergillosis (3.8% o f adults and 7.7% o f juveniles).
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تاریخ انتشار 2012