Empidonax traillii extimus
Leal, D.A. 1994. Letter to Pat Mehlhop regarding SW Willow flycatcher sighting in 1993 and 1992 by the NM Cooperative Fish and Wildlife Research Unit.
Williams, S.O. 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.
Salazar, R. and M. Parsaca. 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.
Salazar, R. AND S. Desgeorges. 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.
Salazar, R. AND S. Desgeorges. 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.
Carpenter, R.F. (1993) Unpublished Letters Regarding Will Flycatcher Surveys. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 45 p.
Williams, S.O. 1999. Letter to P. Mehlhop with attached summary of Willow Flycatcher surveys in NM during 1993-1998 with maps of each site. 21 p.
Stoleson, S. and D. Finch. 1999. Reproductive success of southwestern willow flycatchers in the Cliff-Gila Valley, New Mexico: a summary report for the 1998 field season. 25 p.
Johnson, K. 1999. Email exchange between K. Johnson and S.O. Williams with regard to cutting of willow patch used by a Southwestern Willow Flycatcher pair. 1 p.
Ahlers, D. and L. White. 1999. 1998 Southwestern Willow Flycatcher study results. Selected sites along the Rio Grande from Velarde, New Mexico, to the headwaters of Elephant Butte Reservoir. Unpubl. report by Bureau of Reclamation, Denver, CO. 72 p. +