Southwestern Willow Flycatcher
Johnson, M. 2021. Permit data for SWFL and YBCU for 2020 and 2021 TE43746A-3
Meyer, R. 2020. La Tierra Environmental Consulting FWS permit report.
Abeyta, E. 2025. FWS permit data from surveys for Willow Flycatchers. Elisa Abeyta ESPER1902037.
Hawks Aloft. 2024. FWS survey data for Willow Flycatcher.
Hnery, E. 2023. Observations on various species, including Mexican spotted owl, Chiricahua Leopard Frog, Western Yellow Billed Cuckoo, and Narrow-headed Gartersnake
Hawks Aloft. 2023. FWS permit data for Willow Flycatcher from Hawks Aloft.
Hawks Aloft, Inc. 1998. Annual report of the breeding bird surveys and Southwestern Willow Flycatcher surveys, Rio Puerco Resource Area. 81 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:
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.
D. Ahlers, Bureau of Reclamation. 2017. Survey forms for Southwest Willow Flycatcher and Yellow-billed Cuckoo for 2017.