This pic shows hundreds of snow geese taking flight at the Sonny Bono Salton Sea National Wildlife Refuge, which is located at the southern end of the Salton Sea in the Imperial Valley.  The refuge sits at 227 feet below sea level in the Colorado Desert, and is on the Pacific Flyway.  The Salton Sea is the only area in the U.S. to see the Yellow-footed Gull.

Links:    SBSSNWR