Lark Sparrow (Chondestes grammacus) Common Nighthawk (Chordeiles minor) Widow Skimmer (Libellula luctuosa) Roseate Skimmer (Orthemis ferruginea) Twelve-Spotted Skimmer (Libellula pulchella) Twelve-Spotted Skimmer (Libellula pulchella) Sand Creek Massacre National Historic Site Not one our nation's finest hours. in memoriam Plains Pocket Gopher (Geomys bursarius) Heat Wave Grack on a Hot Wooden Perch Common Nighthawk (Chordeiles minor) Common Nighthawk (Chordeiles minor) Elisha_A_Hancock_005 Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Steamtown National Historic Site Dickcissel (Spiza americana) Colorado Birding Trail 105° Common Nighthawk (Chordeiles minor) Red-Headed Woodpecker (Melanerpes erythrocephalus) Red-Headed Woodpecker (Melanerpes erythrocephalus) Great Crested Flycatcher (Myiarchus crinitus) Plumbeous Vireo (Vireo plumbeus) House Wren (Troglodytes aedon) Cliff Swallow in Nest American Avocet (Recurvirostra americana) Spotted Sandpiper (Actitis macularius) Yellow-Breasted Chat (Icteria virens) Yellow Warbler (Setophaga petechia) House Wren with Snack Red Crossbill (Loxia curvirostra) Eastern Kingbird (Tyrannus tyrannus) Showing Crown Warbling Vireo (Vireo gilvus) Warbling Vireo (Vireo gilvus) Paging Mr. Link. Mr. Bob O. Link. House Sparrow (Passer domesticus) Western Kingbird (Tyrannus verticalis) Western Wood-Pewee (Contopus sordidulus)