Revised evidence for facultative sex ratio adjustment in birds: a correction.

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Colleges, School and Institutes


We provide a revision to the calculation of effect sizes and heterogeneity statistics in our original article, 'Facultative primary sex ratio variation: a lack of evidence in birds' (Ewen et al. 2004). Our revision shows that significant heterogeneity in sex ratio study effect sizes does indeed exist and that for a series of key traits the average effect sizes (while still weak) are in fact significantly different from zero.


Original languageEnglish
Pages (from-to)3129-30
Number of pages2
JournalRoyal Society of London. Proceedings B. Biological Sciences
Issue number1605
Publication statusPublished - 22 Dec 2006