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 for 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.