Empidonax traillii extimus
Cooper, C.A. 1997. Statewide summary of 1996 surveys for Willow Flycatchers in New Mexico. Unpubl. Report for NM Dept. of Game and Fish. 8 p.
Turner, R. (1996) Collected Willow Flycatcher Survey Forms. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 42 p.
Martinez, F. 1996. Memo with subject Annual Reports - Mexican Spotted Owl and Southwest Willow Flycatcher. 9 p.
Stokes, M. (1995) Willow Flycatcher Survey Form. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 4 p.
Mehlman, D., K. Gordon, D. Gray, R. Kimball, and M. Mund-Meyerson. 1995. 1995 survey for and habitat characteristics of the Southwestern willow flycatcher (Empidonax trailli extrimus) in the Isleta-Belen reach of the Rio Grande, New Mexico. Submitted to:
Cooper, C. 1996. Summary of 1995 surveys for Willow flycatchers in New Mexico. Prepared for NM Dept. Game & Fish.
Salazar, Roberta and Gretchen Fitzgerald. 1994. Willow flycatcher survey detection and nest site data forms developed by Partners in Flight to establish occurrence of Empidonax traillii in NM. June 20,1994.
Mund, M.J. 1994. Survey for the Southwestern willow flycatcher, Empidonax traillii extimus, in the middle Rio Grande flood protection project area, Isleta Pueblo to south of Belen. Submitted to U.S. Army Corps of Engineers. . 26 p.
Mehlhop, P. and P. Tonne. 1994. Results of surveys for the Southwestern Willow flycatcher- Rio Grande Floodway, San Acacia to Bosque Apache Unit, Socorro County, New Mexico. Unpubl. report by New Mexico Natural Heritage Program for U.S. Army Corps of Engi
Unknown, (1999) BISON-M (Draft) Taxonomy, Species Flycatcher, Willow, (Southwestern), Species Id 040521. Filed in Guadalupe RD, Lincoln NF, USFS.