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Molecular Ecology · 2002 · Vol. 11 · Issue 8 · Wiley
We analysed the morphology of nestling barn swallows ( Hirundo rustica ) in relation to their sex, and laying and hatching order. In addition, we studied sex‐allocation in relation to parentage, parental age and expression of a secondary sexual character of fathers. Molecular sexing was conducted using the sex chromosome‐linked avian CHD1 gene. Sex of the offspring was not associated with laying or hatching order. None of nine...