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Publication: American Ornithologists' Union. 1945. Twentieth supplement to the American Ornithologists' Union Check-list of North American Birds. The Auk, vol. 62, no. 3. 436-449.

ITIS records citing this publication
 
 Kingdom Animalia
  Empidonax hammondi (Xantus de Vesey, 1858) -- invalid
  Empidonax hammondii (Xantus de Vesey, 1858) -- valid -- Hammond's Flycatcher, Mosquero de Hammond
  Junco caniceps (Woodhouse, 1853) -- invalid
  Junco caniceps caniceps (Woodhouse, 1853) -- invalid
  Junco caniceps dorsalis Henry, 1858 -- invalid
  Seiurus aurocapillus (Linnaeus, 1766) -- invalid -- Chipe suelero, Ovenbird, paruline couronnée
  Seiurus aurocapillus aurocapillus (Linnaeus, 1766) -- invalid
  Seiurus aurocapillus cinereus A. H. Miller, 1942 -- invalid
  Seiurus aurocapillus furvior Batchelder, 1918 -- invalid
  Tyrannus melancholicus couchi S. F. Baird, 1858 -- invalid
  Xema sabini sabini (Sabine, 1819) -- invalid
  Xema sabini woznesenskii Portenko, 1939 -- invalid
   

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