@misc{indiciaeb8c9aa281047,
  title = {Distribution and abundance of Least Bell’s Vireos ( Vireo bellii pusillus ) and Southwestern Willow Flycatchers ( Empidonax traillii extimus ) on the Middle San Luis Rey River, San Diego County, southern California—2021 Data summary},
  author = {Lisa D. Allen and Barbara E. Kus},
  year = {2022},
  doi = {10.3133/dr1147},
  url = {https://pubs.usgs.gov/publication/dr1147},
  note = {Source identifier: dr1147}
}