Snowy Egret Great Tailed Grackle Shoe Line Gadwall Gadwall Pair Gadwall Yellow-Headed Blackbirds Mallard Mallards Mallard Mallard Ring-Billed Gull Jailhouse and Courthouse Rocks Chimney Rock National Historic Site Sunflower Sunflower Scotts Bluff National Monument Scotts Bluff National Monument Scotts Bluff National Monument Scotts Bluff National Monument Scotts Bluff National Monument Scotts Bluff National Monument Oregon Trail ... House Sparrow Ring-Billed Gulls Blue-Winged Teal Petroglyphs Petroglyphs Quarry Area Entrance River by the Quarry Area View from the Canyon Area Rafters on the River Below View from the Canyon Area View from the Canyon Area View from the Canyon Area View from the Canyon Area Dinosaur National Monument Eurasian Collared Dove Great Horned Owl Great Horned Owl Great Horned Owl Great Horned Owl Pre-Dawn 2 Pre-Dawn Panorama Pre-Dawn 1