Smith, A, P. Dockens, A. Tudor, H. English, and B. Allen. 2003. Southwestern willow flycatcher 2003 survey and nest monitoring report. Technical Report 233, Nongame and Endangered Wildlife Program, Arizona Game and Fish Department, Phoenix, AZ.. 73 p.

• Empidonax traillii extimus
• Southwestern Willow Flycatcher