Strix occidentalis lucida
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Willard, D. 1985. Letter to Jennifer A. Johnson, dated Jan 14, 1985.
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Mumer, E. Lopez, S. (2010) Bundled Mexican Spotted Owl Data Sheets and Surveys for 2010. Smokey Bear Ranger District, Lincoln National Forest, USFS. 161 p.
Williams, J.D. (2009) Unpublished Email Chain, Subject: PACS, Containing Mexican Spotted Owl Informations and Maps. Lincoln Supervisor's Office, Lincoln National Forest. USFS. 5 p.