Finch, D.M. and S.H. Stoleson, Eds. 2000. Status, Ecology and Conservation of the Southwestern Willow Flycatcher. Gen.Tech. Rep. RMRS-GTR-60. Albuquerque, NM: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station.131

• Empidonax traillii extimus
• Willow Flycatcher