Strix occidentalis lucida
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Sanchez, B. (1991) Formal Spotted Owl Monitoring, Management Territoty 0602007. Silver City Ranger District, Gila National Forest, USFS. 7 p.
Sanchez, B. (1991) Formal Spotted Owl Monitoring, Management Territory 0602003, Summar of 1991 Monitoring. Silver City Ranger District, Gila National Forest, USFS. 5 p.
Perlman, M. Walsh, J.. (1991) 1991 Mexican Spotted Owl Inventory Form. Tres Peidras Ranger District, Carson National Forest, USFS. 75 p.
Madrid, B. Ford-Schmid, R. Arvidson, C. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 3 p.
Madrid, B. Arvedson, C. (1991) 1991 Mexican Spotted Owl Daytime Follow-up Visit Form. Silver City Ranger District, Gila National Forest, USFS. 2 p.
Gila National Forest. 1991. Mexican Spotted Owl inventory forms.
Frybarger, S. (1992) Collected 1991 Mexican Spotted Owl Monitoring Forms. Silver City Ranger District, Lincoln National Forest, USFS. 120 p.
Flanagan, P. (1991) 1991 Mexican Spotted Owl Inventory Form. Questa Ranger District, Carson National Forest, USFS. 41 p.
Burns, B. (1991) 1991 Meican Spotted Owl Inventory Form. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 20 p.