An Empidonax occidentalis [2] [3] [4] [5] [6] Aves nga ginhulagway ni Nelson hadton 1897. An Empidonax occidentalis in nahilalakip ha genus nga Empidonax familia nga Tyrannidae .[7] [8] IUCN an species komo diri gud kababarak-an .[1]
Ini nga species ginbahin ha masunod nga subspecies:[7]
E. o. hellmayri E. o. occidentalis
↑ 1.0 1.1
"Empidonax occidentalis " . IUCN Red List of Threatened Species. Version 2012.2International Union for Conservation of Nature . 2012. Ginkuhà 24 Oktubre 2012 .
↑ Gill, Frank, and Minturn Wright (2006) , Birds of the World: Recommended English Names
↑ Dickinson, Edward C., ed. (2003) , The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition
↑ (2006) , website, Zoonomen - Zoological Nomenclature Resource, 2006.05.28
↑ Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
↑ (2005) , website, AOU Check-List (07-2005)
↑ 7.0 7.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist" . Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012 . CS1 maint: multiple names: authors list (link ) CS1 maint: extra text: authors list (link ) ↑ ITIS: The Integrated Taxonomic Information System . Orrell T. (custodian), 26 Abril 2011
