Sitta pygmaea (pygmy nuthatch) | CLASSIFICATION

Kingdom Animalia (animals)
- Eumetazoa (metazoans)
  - Bilateria (bilaterally symmetrical animals)
    - Deuterostomia (deuterostomes)
      - Phylum Chordata (chordates)
        
        Craniata (craniates)
        
        Subphylum Vertebrata (vertebrates)
        
        Superclass Gnathostomata (jawed vertebrates)
        
        Euteleostomi (bony vertebrates)
        
        Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates)
        
        Tetrapoda (tetrapods)
        
        Amniota (amniotes)
        
        Class Reptilia (turtles, snakes, lizards, and relatives)
        
        Class Aves (birds)
        
        Subclass Neognathae (neognath birds)
        
        Infraclass Neoaves (modern birds)
        
        Order Passeriformes (perching birds)
        
        Passerida
        
        Muscicapoidea (thrushes, sparrows, and relatives)
        
        Family Sittidae (nuthatches)
        
        Genus Sitta (nuthatches)
        
        Species Sitta pygmaea (pygmy nuthatch)
        
        Subspecies Sitta pygmaea brunnescens
        
        Subspecies Sitta pygmaea elii
        
        Subspecies Sitta pygmaea flavinucha
        
        Subspecies Sitta pygmaea leuconucha
        
        Subspecies Sitta pygmaea melanotis
        
        Subspecies Sitta pygmaea pygmaea