• [AnAge] http://genomics.senescence.info/species/entry.php?species=Strix_occidentalis. Last accessed: 2020-05-05.
  • [Wiki] https://en.wikipedia.org/wiki/Spotted_owl. Last accessed: 2020-05-05.
  • [Daws1923] Dawson, L. W. (1923). The Birds of California: A Complete, Scientific and Popular Account of the 580 Species and Subspecies of Birds Found in the State, volume 2. South Moulton, South Moulton, San Diego, CA, USA.
  • [ForsMesl1984] Forsman, E. D., Meslow, E. C., and Wight, H. M. (1984). Distribution and biology of the spotted owl in Oregon. Wildlife Monographs, 87.
  • [GutiFran1995] Gutierrez, R. J., Franklin, A. B., and Lahaye, W. S. (1995). Spotted owl (Strix occidentalis), version 2.0. doi:10.2173/bna.179.
  • [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
  • [Mill1985] Miller, G. S., Nelson, K., and Wright, W. C. (1985). Two-year-old female spotted owl breeds successfully. Western Birds, 16:69--73.