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Gutiérrez-Ibáñez, Cristián; Andrew N. Iwaniuk; Douglas R. Wylie (2011). "Relative Size of Auditory Pathways in Symmetrically and Asymmetrically Eared Owls". Brain Behav Evol. 78 (4): 281–301. doi:10.1159/000330359. PMID21921575. S2CID6013325.
Beatini, Julia R.; Proudfoot, Glenn A.; Gall, Megan D. (February 2018). "Frequency sensitivity in Northern saw-whet owls (Aegolius acadicus)". Journal of Comparative Physiology A. 204 (2): 145–154. doi:10.1007/s00359-017-1216-2. ISSN0340-7594. PMID28993864. S2CID19735506.
Gutiérrez-Ibáñez, Cristián; Andrew N. Iwaniuk; Douglas R. Wylie (2011). "Relative Size of Auditory Pathways in Symmetrically and Asymmetrically Eared Owls". Brain Behav Evol. 78 (4): 281–301. doi:10.1159/000330359. PMID21921575. S2CID6013325.
Beatini, Julia R.; Proudfoot, Glenn A.; Gall, Megan D. (February 2018). "Frequency sensitivity in Northern saw-whet owls (Aegolius acadicus)". Journal of Comparative Physiology A. 204 (2): 145–154. doi:10.1007/s00359-017-1216-2. ISSN0340-7594. PMID28993864. S2CID19735506.
Weidensaul, C. Scott; Colvin, Bruce A.; Brinker, David F.; Huy, J. Steven (June 2011). "Use of Ultraviolet Light as an Aid in Age Classification of Owls". The Wilson Journal of Ornithology. 123 (2): 373–377. doi:10.1676/09-125.1. ISSN1559-4491. S2CID28913007.
Gutiérrez-Ibáñez, Cristián; Andrew N. Iwaniuk; Douglas R. Wylie (2011). "Relative Size of Auditory Pathways in Symmetrically and Asymmetrically Eared Owls". Brain Behav Evol. 78 (4): 281–301. doi:10.1159/000330359. PMID21921575. S2CID6013325.
Beatini, Julia R.; Proudfoot, Glenn A.; Gall, Megan D. (February 2018). "Frequency sensitivity in Northern saw-whet owls (Aegolius acadicus)". Journal of Comparative Physiology A. 204 (2): 145–154. doi:10.1007/s00359-017-1216-2. ISSN0340-7594. PMID28993864. S2CID19735506.
Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2022). "Owls". IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 10 December 2022.
worldcat.org
Weidensaul, C. Scott; Colvin, Bruce A.; Brinker, David F.; Huy, J. Steven (June 2011). "Use of Ultraviolet Light as an Aid in Age Classification of Owls". The Wilson Journal of Ornithology. 123 (2): 373–377. doi:10.1676/09-125.1. ISSN1559-4491. S2CID28913007.
Dunn, Jon L.; Alderfer, Jonathan K. (2017). National Geographic field guide to the birds of North America (7th ed.). Washington, D.C.: National Geographic Society (U.S.). ISBN978-1-42-621835-4. OCLC1002108930.