Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Aves Plinius, nom. inval. - birds see Class Aves Linnaeus, 1758 Order Macrorhynchae nom. inval. see Order Grallae Linnaeus, 1758 Genus Ardea nom. inval. see Genus Ardea Linnaeus, 1758 1 Ardea nom. inval.