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Survival and non-breeding of adult common guillemots Uria aalge.

Harris, M.P.; Wanless, S.. 1995 Survival and non-breeding of adult common guillemots Uria aalge. Ibis, 137 (2). 192-197. 10.1111/j.1474-919X.1995.tb03239.x

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Abstract/Summary

Annual survival of colour-ringed Common Guillemots Uria aalge with at least 1 year of breeding experience was measured in five study areas on the Isle of May, southeast Scotland from 1982 to 1993. Annual survival averaged 94.9%. There were no significant sex, year or area differences. Between 5% and 10% of the birds known to be alive in any year did not breed, and on average such birds appeared to survive less well (87%) than breeders (95%). Non-breeding did not occur randomly within the population, and 6% of birds accounted for 47% of the cases of non-breeding. It appeared that non-breeding in Common Guillemots on the Isle of May was socially induced with most cases occurring after an individual had lost its site.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1111/j.1474-919X.1995.tb03239.x
Programmes: CEH Programmes pre-2009 publications > Other
CEH Sections: _ Pre-2000 sections
ISSN: 0019-1019
Additional Keywords: Isle of May
NORA Subject Terms: Zoology
Date made live: 10 Dec 2010 17:15
URI: http://nora.nerc.ac.uk/id/eprint/12670

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