The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

  • American Ornithologists' Union. 1957. Check-list of North American Birds, 5th Edition. xiii + 691
  • Dickinson, Edward C., ed. 2003. The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition. 1039
  • Peters, James Lee. 1945. Check-list of Birds of the World, vol. 5. xi + 306
  • Weick, Friedholm. 1999. Zur Taxonomie der Amerikanischen Uhus (Bubo spp). Unter Berücksichtigung eines größtenteils parallel variierenden Polymorphismus innerhalb der Subspecies. Mit zwei Farbtafeln und zwei Verbreitungskarten. Ökologie der Vögel, vol. 21, no. 2. 363-387

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