Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       Pici see Suborder Pici Meyer & Wolf, 1810
         Family Picidae Vigors, 1825 - woodpeckers
           Subfamily Picinae Vigors, 1825 - true woodpeckers
             Genus Sphyrapicus S.F. Baird, 1858
               1 Sphyrapicus thyroideus (Cassin, 1851) - Williamson's sapsucker
               2 Sphyrapicus varius (C. Linnaeus, 1766) - yellow-bellied sapsucker
               3 Sphyrapicus nuchalis S.F. Baird, 1858 - red-naped sapsucker
               4 Sphyrapicus ruber (J.F. Gmelin, 1788) - red-breasted sapsucker