Data from: Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios ...

• Main Authors: Lisovski, Simeon, Fröhlich, Anne, Von Tersch, Matthew, Klaassen, Marcel, Peter, Hans-Ulrich, Ritz, Markus S.
• Format: Dataset
• Language: English
• Published: Dryad 2015
• Subjects: sex-role reversal; Catharacta; population sex ratio; Spring migration; arrival dates; Anvers; King George Island; Antarc*; Antarctica; Catharacta maccormicki; South Polar Skuas
• Online Access: https://dx.doi.org/10.5061/dryad.6v5g3; https://datadryad.org/stash/dataset/doi:10.5061/dryad.6v5g3

In migratory animals, protandry (earlier arrival of males on the breeding grounds) prevails over protogyny (females preceding males). In theory, sex differences in timing of arrival should be driven by the operational sex ratio, shifting toward protogyny in female-biased populations. However, empiri...