TY  - RPRT
TI  - Southwestern Willow Flycatcher ( Empidonax traillii extimus ) surveys at the city of Carlsbad Preserve, San Diego County, California—2025 data summary
AU  - Lisa D. Allen
AU  - Barbara E. Kus
PY  - 2026
DO  - 10.3133/dr1223
UR  - https://pubs.usgs.gov/publication/dr1223
ID  - dr1223
ER  -