Imperium naturæ C. Linnaeus, 1758 - nature
Mundus Plinius - physical world
naturalia - natural bodies
Regnum Animale C. Linnaeus, 1758 - animal kingdom
see Kingdom Animalia Linnaeus, 1758
Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
1 Order Accipitres Linnaeus, 1758
see Suborder Accipitres (C. Linnaeus, 1758)
2 Order Picae Linnaeus, 1758
see Parvclass Picae (C. Linnaeus, 1758)
3 Order Anseres Linnaeus, 1758
see Suborder Anseres Linnaeus, 1758
4 Order Grallae Linnaeus, 1758
5 Order Gallinae Linnaeus, 1758
6 Order Passeres Linnaeus, 1758
see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766