RheidaeTinamidaeArdeidaeBalaenicipitidaeScopidaeCiconiidaeThreskiornithidaePhoenicopteridaeAnhimidaeAnseranatidaeAnatidaeMegapodiidaeCracidaePhasianidaeOpisthocomidaeMesitornithidaePedionomidaeGruidaeAramidaePsophiidaeRallidaeHeliornithidaeRhynochetidaeEurypygidaeCariamidaeOtididaeJacanidaeRostratulidaeDromadidaeHaematopodidaeIbidorhynchidaeRecurvirostridaeBurhinidaeGlarccolidaeCharadiidaeScolopacidaeThinocoridaeChionidiidaeStercorariidaeLaridaeRhynchopidaeAlcidaePresbyornithidaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Ericson_1997aa