Atlantic Puffin (Fratercula arctica) sex-biased dispersal dataset and R script

Dataset of known-sex Atlantic Puffins (Fratercula arctica) hatched on Machias Seal Island (2005-2014) with recruitment outcomes (philopatric, dispersed). The first dataset (ATPU_KnownSex2025_BCI_IFD_HY2005to2014_MSI) contains all known-sex puffins meeting the recruitment criteria. The second dataset (ATPU_KnownSex2025_onlyBCI_IFD_HY2005to2014_MSI) contains only puffins that have body condition and individual fledge date data. The R script (ATPU_SexBiasedDispersal_Code.R) performs chi-square tests, fisher exact tests, and binomial generalized linear models to evaluate whether there is evidence for sex-biased dispersal in Atlantic Puffins. Please see the manuscript for the full description of the datasets and methodology.