Sterna bergii (crested tern) | 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 Charadriiformes (shorebirds and relatives)
        
        Family Laridae (gulls, terns, and skimmers)
        
        Subfamily Sterninae (terns and noddys)
        
        Genus Sterna (typical terns)
        
        Species Sterna bergii (crested tern)
        
        Subspecies Sterna bergii bergii
        
        Subspecies Sterna bergii cristata
        
        Subspecies Sterna bergii enigma
        
        Subspecies Sterna bergii thalassina
        
        Subspecies Sterna bergii velox