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 Picoides Lacépède, 1799
               01 Picoides mixtus (Boddaert, 1783) - checkered woodpecker
               02 Picoides lignarius (Molina, 1782) - striped woodpecker
               03 Picoides scalaris (Wagler, 1829) - ladder-backed woodpecker
               04 Picoides nuttallii (Gambel, 1843) - Nuttall's woodpecker
               05 Picoides pubescens (C. Linnaeus, 1766) - downy woodpecker
               06 Picoides villosus (C. Linnaeus, 1766) - hairy woodpecker
               07 Picoides arizonae (Hargitt, 1886)
               08 Picoides stricklandi (Malherbe, 1845) - Strickland's woodpecker
               09 Picoides borealis (Vieillot, 1809) - red-cockaded woodpecker
               10 Picoides albolarvatus (Cassin, 1850) - white-headed woodpecker
               11 Picoides tridactylus (C. Linnaeus, 1758) - three-toed woodpecker
               12 Picoides arcticus (Swainson, 1832) - black-backed woodpecker