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Long-term study of mortality in the common guillemot in the Baltic Sea
Olsson, O., Nilsson, T. & Fransson, T. (2000) Swedish Enivronmental Protection Agency, Report 5057
Summary
This study is based on a uniquely large and long-term data set of ringed common guillemots (Uria aalge) in the Baltic Sea. We analysed recoveries of 42,824 common guillemots ringed in Sweden from 1912-1998. Most of the birds were juveniles ringed on the island of Stora Karlsö in the southern Baltic proper. Of the ringed birds, 6 % were recovered (i.e. found dead or controlled alive).

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