@misc{indiciaeb794f00fa7ac,
  title = {A survey protocol for the Southwestern Willow Flycatcher (Empidonax traillii extimus)},
  author = {Timothy J. Tibbitts and Mark K. Sogge and Susan J. Sferra},
  year = {1994},
  url = {https://pubs.usgs.gov/publication/70129513},
  note = {Source identifier: 70129513}
}