120103-A-ZR776-001
Joe Lishka, a U.S. Army Corps of Engineers park ranger, conducts a midwinter bald eagle survey at Lake Sonoma, Calif. Coordinated by several agencies including the U.S. Geological Survey and USACE, the annual survey is held nationwide in 43 states.

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Photo by: USACE |  VIRIN: 120103-A-ZR776-001.JPG