Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys at the City of Carlsbad Preserve, San Diego County, California—2022 Data Summary
Researchers surveyed for Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) at five survey areas within the City of Carlsbad Preserve, Carlsbad, California, in 2022. Three flycatcher surveys were completed between May 18 and June 29, 2022. Territorial or transient flycatchers were not observed at the City of Carlsbad Preserve in 2022.
Allen, L.D., and Kus, B.E., 2023, Southwestern Willow Flycatcher (Empidonax traillii extimus) surveys at the city of Carlsbad Preserve, San Diego County, California—2022 data summary: U.S. Geological Survey Data Report 1172, 9 p., https://doi.org/10.3133/dr1172.