USGS Reports Bird Surveys at Hansen Dam Basin
April 22, 2026
April 22, 2026
WASHINGTON, April 22 (TNSLrpt) -- USGS biologists surveyed endangered Least Bell's Vireos and Southwestern Willow Flycatchers along Big Tujunga Creek in the Hansen Dam Basin, Los Angeles County, California, during 2025. The Data Report 1222 by Suellen Lynn and Barbara Kus summarizes findings from four vireo surveys from April 17 to July 2 and three flycatcher surveys from May 20 to July 2. Funded by the U.S. Army Corps of Engineers, the work supports maintenance activities under endangered . . .