Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Class "Aves" Plinius, nom. inval. - birds] see Class Aves Linnaeus, 1758
             [Order "Picae" nom. inval.] see Order Picae Linnaeus, 1758
               1 [Genus "Ramphastos" Linnaeus, 1748] see Genus Ramphastos Linnaeus, 1758
               2 [Genus "Buceros" Linnaeus, 1748, nom. inval.] see Genus Buceros Linnaeus, 1758
               3 [Genus "Corvus" nom. inval.] see Genus Corvus Linnaeus, 1758
               3.0 [Genus "Coracias" nom. inval.] see Genus Coracias Linnaeus, 1758
               4 [Genus "Picus" nom. inval.] see Genus Picus Linnaeus, 1758
               5 [Genus "Jynx" nom. inval.] see Genus Jynx Linnaeus, 1758
               6 [Genus "Cuculus" nom. inval.] see Genus Cuculus Linnaeus, 1758
               7 [Genus "Paradisaea" nom. inval.] see Genus Paradisaea Linnaeus, 1758
               7.0 [Genus "Paradisea" nom. inval.] see Genus Paradisaea nom. inval.
               8 [Genus "Upupa" nom. inval.] see Genus Upupa Linnaeus, 1758
               9 [Genus "Ispida" nom. inval.] see Genus Merops Linnaeus, 1758
               9.0 [Genus "Certhia" nom. inval.] see Genus Certhia Linnaeus, 1758