publication venue for Analysing phenotypic variation in barn swallows (Hirundo rustica) across China to assess subspecies status 2020 Global song divergence in barn swallows (Hirundo rustica): exploring the roles of genetic, geographical and climatic distance in sympatry and allopatry 2018 Comparative analysis reveals migratory swallows (Hirundinidae) have less pointed wings than residents 2017 AFLP analysis shows high incongruence between genetic differentiation and morphology-based taxonomy in a widely distributed tortoise 2013 Functional differentiation of African grazing ruminants: an example of specialized adaptations to very small changes in diet 2008 THE EFFECT OF CONSPECIFIC ATTRACTION ON METAPOPULATION DYNAMICS 1991