Empidonax traillii extimus
Paul, L. Harbrough, G. (1994) Willow Flycatcher Survey Form. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 3 p.
Mehlhop, P. and P. Tonne. 1994. Results of surveys for the Southwestern Willow flycatcher- Middle Rio Grande Flood Protection Project, Bernalillo to Belen, New Mexico, Corrales Unit. Unpubl. report by New Mexico Natural Heritage Program for U.S. Army Corp
Skaggs, K. 1993. Willow flycatcher survey detection and nest site data forms developed by Partners in Flight to establish occurrence of Empidonax traillii extimus in NM. Summary added by S.O. Williams III, NM Dept Game and Fish.
Romme, R.C. May 17, 24 and 26, 1993. Electronic mail message report for conversations with John Hubbard regarding locality of 1971 sighting of Southwestern Willow flycatcher.
Kuykendall, B. 1993. Willow flycatcher survey detection and nest site data forms developed by Partners in Flight to establish occurrence of Empidonax traillii extimus in NM. Summary added by S.O. Williams III, NM Dept Game and Fish.
Moore, D. and Ahlers, D. 2008. 2007 Southwestern Willow Flycatcher Study Results: Selected Sites Along the Rio Grande from Velarde to Elephant Butte Reservoir, New Mexico. Prepared for the Bureau of Reclamation Albuquerque Area Office.
Siegle, R and D. Ahlers. 2004. Brown-headed cowbird management techniques manual. U.S. Department of the Interior Bureau of Reclamation, Ecological Planning and Assessment, Denver, CO.. 78 p.
New Mexico Department of Game and Fish. 2012. Year-end permit report. Conservation Services, NMDGF.
Keller, D.C. 2011. Mexican spotted owl and Southwestern willow flycatcher surveys for the 2011-breeding season. Report to US. Fish and Wildlife Service, Section 10 TE-800892. 4 p.
Oldham, M. 1993. Map of SW Willow flycatcher survey sites at Bosque del Apache NWR in summer of 1993. Attached to a letter sent to S.O. Williams III, at NM Dept Game and Fish.