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
           Order Passeres Linnaeus, 1758 see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766
             Genus Loxia Linnaeus, 1758
               01 Loxia curvirostra Linnaeus, 1758 - red crossbill
               02 Loxia coccothraustes Linnaeus, 1758 see Coccothraustes coccothraustes (C. Linnaeus, 1758)
               03 Loxia enucleator Linnaeus, 1758 see Pinicola enucleator (C. Linnaeus, 1758)
               04 Loxia pyrrhula Linnaeus, 1758 see Pyrrhula pyrrhula (C. Linnaeus, 1758)
               05 Loxia cardinalis Linnaeus, 1758 see Cardinalis cardinalis (C. Linnaeus, 1758)
               06 Loxia dominicana Linnaeus, 1758 see Paroaria dominicana (C. Linnaeus, 1758)
               07 Loxia cristata Linnaeus, 1758
               08 Loxia mexicana Linnaeus, 1758
               09 Loxia eryocephala Linnaeus, 1758 see Amadina erythrocephala (C. Linnaeus, 1758)
               10 Loxia flavicans Linnaeus, 1758
               11 Loxia oryzivora Linnaeus, 1758 see Padda oryzivora (C. Linnaeus, 1758)
               12 Loxia panicivora Linnaeus, 1758
               13 Loxia punctulata Linnaeus, 1758 see Lonchura punctulata (C. Linnaeus, 1758)
               14 Loxia hordeacea Linnaeus, 1758 see Euplectes hordeaceus (C. Linnaeus, 1758)
               15 Loxia sanguinirostris Linnaeus, 1758
               16 Loxia astrild Linnaeus, 1758 see Estrilda astrild (C. Linnaeus, 1758)
               17 Loxia cyanea Linnaeus, 1758
               18 Loxia lineola Linnaeus, 1758 see Sporophila lineola (C. Linnaeus, 1758)
               19 Loxia mexicana C. Linnaeus, 1758, nom. illeg.
               20 Loxia chloris Linnaeus, 1758 see Carduelis chloris (C. Linnaeus, 1758)
               21 Loxia butyracea Linnaeus, 1758
               22 Loxia collaria Linnaeus, 1758
               23 Loxia benghalensis Linnaeus, 1758 see Ploceus benghalensis (C. Linnaeus, 1758)
               24 Loxia malabarica Linnaeus, 1758 see Lonchura malabarica (C. Linnaeus, 1758)
               25 Loxia fusca Linnaeus, 1758
               26 Loxia melanocephala Linnaeus, 1758 see Ploceus melanocephalus (C. Linnaeus, 1758)
               27 Loxia cana Linnaeus, 1758
               28 Loxia nigra Linnaeus, 1758 see Melopyrrha nigra (C. Linnaeus, 1758)
               29 Loxia caerulea Linnaeus, 1758 see Passerina caerulea (C. Linnaeus, 1758)
               30 Loxia violacea Linnaeus, 1758 see Loxigilla violacea (C. Linnaeus, 1758)
               31 Loxia minuta Linnaeus, 1758 see Sporophila minuta (C. Linnaeus, 1758)
               32 Loxia bicolor Linnaeus, 1758