Empidonax traillii extimus
Fisher, R. 1993. Multiple maps with locations and dates of Buteogallus anthracinus and Empidonax traillii extimus sightings in NM.
Brodhead, K. M., D. M. Finch, and S. H. Stoleson. 2002. Southwestern willow flycatcher in the Cliff-Gila Valley: Results of nest monitoring and climatic influences on breeding. Draft summary report for the 2002 field season. . 13 p.
Sadoti, G. 2003. A shapefile of the southwestern willow flycatcher breeding territories for the Cliff-Gila Valley, New Mexico.
Mehlhop, P. 2000. Status of the Southwestern Willow Flycatcher (Empidonax trailii extimus) on Coyote Creek, Mora County, New Mexico. Report to the New Mexico Department of Game and Fish, Santa Fe, NM.
Silva, J.B. 1997. Willow Flycatcher survey datasheets for the Rio Puerco Resource Area. Bureau of Land Management.
Hawks Aloft, Inc. 2003. Willow Flycatcher data sheets for surveys on BLM Rio Puerco Resource Area.
Hawks Aloft, Inc. 2001. Data sheets for Willow Flycatcher surveys on the BLM Rio Puerco Resource Area.
Carson National Forest. 2018. Annual FWS permit report for the Southwest Willow Flycatcher. Submitted by Francisco Cortez. Fish and Wildlife Service (FWS) Permit TE839848-2.
Duran, J. 2016. Surveys for Mexican Spotted Owl and Southwestern Willow Flycatcher. Carson National Forest, Camino Real Ranger District.
Gatlin, J. 2015. Report of flycatcher detections in suitable habitat on Carson National Forest. U.S. Forest Service, Carson National Forest, TE-839848.