TY  - RPRT
TI  - 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
AU  - Lisa D. Allen
AU  - Barbara E. Kus
PY  - 2022
DO  - 10.3133/dr1147
UR  - https://pubs.usgs.gov/publication/dr1147
ID  - dr1147
ER  -