GPS coordinates, altitude, number of infected resident birds (<i>N</i> infected/<i>N</i> total), numbers of migratory hatch year (HY) and after hatch year (AHY) individuals infected with <i>Plasmodium</i> spp. are given by location.

Residents and hatch year migratory birds were infected by one lineage Plasmodium P43 whereas after hatch year migratory birds were infected by six lineages of Plasmodium spp (see Supporting Information).