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Organism
  Animalia
      Chordata
        Vertebrata
          Amniota
            Aves
                    Piciformes
                            Picidae
                              Picinae
                                     Campephilus
                                             Campephilus principalis
                                               Campephilus principalis principalis
                                     Colaptes
                                             Colaptes auratus
                                               Colaptes auratus auratus
                                               Colaptes auratus luteus
                                     Dryobates
                                             Dryobates borealis
                                             Dryobates pubescens
                                                   [Picoides pubescens]
                                               Dryobates pubescens pubescens
                                                     [Picoides pubescens pubescens]
                                             Dryobates villosus
                                     Dryocopus
                                             Dryocopus pileatus
                                               Dryocopus pileatus pileatus
                                     Leuconotopicus
                                             Leuconotopicus borealis
                                                   [Picoides borealis]
                                             Leuconotopicus villosus
                                                   [Picoides villosus]
                                               Leuconotopicus villosus audubonii
                                                     [Picoides villosus audubonii]
                                     Melanerpes
                                             Melanerpes aurifrons
                                             Melanerpes carolinus
                                             Melanerpes erythrocephalus
                                     Picoides
                                     Sphyrapicus
                                             Sphyrapicus varius