Empidonax difficilis (Pacific-slope flycatcher) | 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)
        
        Tyranni (New World flycatchers, cotingas, and manakins)
        
        Family Tyrannidae (tyrant flycatchers)
        
        Genus Empidonax (empidonax flycatchers)
        
        Species Empidonax difficilis (Pacific-slope flycatcher)
        
        Subspecies Empidonax difficilis cineritius
        
        Subspecies Empidonax difficilis difficilis
        
        Subspecies Empidonax difficilis insulicola