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  1. By: Snyder, L. L. (Lester Lynne), - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1953
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
    Subjects: 1953  Alder flycatcher  canimp  Empidonax  Ontario  
  2. By: Lanyon, Wesley E.
    Publication info: New York, N.Y, American Museum of Natural History, c1986
    Holding Institution: American Museum of Natural History Library
    Subjects: Classification  Empidonax  Flycatchers  Phylogeny  Tyrannidae  
  1. By: Macouzet, Tania - Escalante Pliego, Patricia.
    Type: Article
    In: Revista mexicana de biodiversidad
    Date: 2013-03-01
    Subjects: Caribbean  Catharus  Empidonax  migratory  Vireo  Zonotrichia