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Variation in the correction factor used for converting counts of individual Guillemots Uria aalge into breeding pairs

By M. P. Harris


The correction factor k (breeding pairs/total count of birds) was measured for two nesting groups of Guillemots Uria aalge over 6–7 years. The value varied between different subgroups but there were no significant differences between groups or between years. These results, and those from other studies, suggest that a value of 0–67 is applicable to a range of colonies. Values of k for Razorbills Aha tarda were more variable. A plea is made for the presentation of original counts rather than 'corrected' figures in published work.\ud \u

Topics: Zoology
Year: 1989
DOI identifier: 10.1111/j.1474-919X.1989.tb02747.x
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