AFP/Getty Images - Fri Jun 23, 9:23 PM ET
Sunset : Pelicans fly over breeding colonies of black skimmers and various terns at sunrise at the Sonny Bono Salton Sea National Wildlife Refuge, a major stop for birds on the Pacific Flyway, near Calipatria, California. Californians are bracing for the possible arrival of the H5N1 bird flu to the West Coast later this summer in what could be the first sign of the deadly virus in the US, as North American and Asian birds mingle in Alaska before their southward migration. (AFP/Getty Images/David Mcnew)