Empidonax traillii extimus
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.
Cleary, D. 1993. Photocopy of Zuni USGS 7.5' quad map with locations of Empidonax traillii extimus around Black Rock Reservoir.
Montgomery, J. M. 1985. Wildlife and Fishery Studies, Upper Gila Water Supply Project Part 1: Terrestrial Wildlife. Prepared for U.S. Bureau of Reclamation, Boulder City, Nevada. 256 p.
Stinnett, K. 2016. Surveys for Southwestern Willow Flycatcher and Yellow-billed Cuckoo at Ladder Ranch. Audubon New Mexico.
Stake, M. 2004. Data sheets for surveys of Willow Flycatcher at Blue Water Canyon, Lost Valley, and San Ysidro. Hawks Aloft, Inc.