Thayer's Gull Thayer's Gull Thayer's Gull Green-Winged Teal (female) Green-Winged Teal (male) Black Phoebe Killdeer Greater Roadrunner Sing Out Loud Red-Winged Blackbird Pawnee Grasslands Birding Tour Thirteen-Lined Ground Squirrel Peacock American Avocet Padre Island National Seashore Cattle Egret Long-Billed Curlew Gull-Billed Tern Wilson's Plover Laughing Gull Common Tern Royal Tern Sandwich Terns Ring-Necked Duck Pair Northern Pintail Northern Pintail Pair Northern Pintail American White Pelican American White Pelican Rusty Blackbird Rusty Blackbird Mallard Rough-Legged Hawk Common Redpoll American Tree Sparrow Common Redpoll Townsend's Solitaire Big Horn Sheep Mountain Chickadee Brown-Capped Rosy-Finch Brown-Capped Rosy-Finch Brown-Capped Rosy-Finch Snow Goose Ross's Goose Ross's Goose