By Henrik Osterblom, Thord Fransson, Olof Olsson
Biological Conservation, Volume 105, Issue 3, June 2002, Pages 309-319, ISSN 0006-3207, DOI: 10.1016/S0006-3207(01)00211-7.

Bycatch of common guillemots (Uria aalge) appears to be the single most serious threat to the population, and the proportion of recoveries of ringed birds in fishing gear, compared with other finding circumstances, has significantly increased during a 28 year period (P