@misc{indiciae749e4ee0a8c1,
  title = {Distribution and abundance of Southwestern Willow Flycatchers (Empidonax traillii extimus) on the Upper San Luis Rey River, San Diego County, California—2021 data summary},
  author = {Scarlett L. Howell and Barbara E. Kus},
  year = {2022},
  doi = {10.3133/dr1158},
  url = {https://pubs.usgs.gov/publication/dr1158},
  note = {Source identifier: dr1158}
}