A partnership between Oregon State University, Real Time Research, and the USGS - Oregon Cooperative Fish and Wildlife Research Unit

In-season and historical data for Caspian terns nesting at colonies in Oregon, Washington, and California. The BRNW team is no longer collecting these data ​at tern colonies outside the Columbia River Basin; if current information/data on ​Caspian terns nesting outside the Columbia River Basin is desired, contact the U.S. Army Corps of Engineers - Portland District.