SCIENTIFIC EXPEDITION TO NORTHEASTERN COLORADO 1 57 



Desert Horned Lark. Otocoris alpestris leucolcema. 



Eastman's Reservoir; Grover. 

 Black-billed Magpie. Pica pica hvdsonia. 



Little Thompson; Crow Creek. 

 American Crow. Corvus hrachyrhynchos. 



Cache la Poudre. 

 CowBiRD. Molothus ater. 



Big Thompson. 

 Yellow-headed Blackbird. Xanthocephalus xanthocephalus. 



West of Windsor. 

 Redwinged Blackbird. Mgelaius phceniceus. 



Boulder; St. Vrain; Little Thompson. 

 Western Meadowlark. Sturnella magna neglecta. 



Boulder; St. Vrain; Little Thompson; Grover; Crow Creek. 

 Bullock Oriole. Icterus bullocki. 



Little Thompson; Crow Creek. 

 Brewer Blackbird. Euphagus cyanocephalus. 



Davis' Ranch; Crow Creek. 

 Western Evening Grosbeak. Hesperiphona vespertinus montanus. 



St. Vrain. 

 House Finch. Carpodacus mexicanus frontalis. 



St. Vrain; Big Thompson. 

 English Sparrow. Passer domesticus. 



Boulder; Loveland, etc. 

 Western Vesper Sparrow. Pocecetes graniineus confinis. 



St. Vrain. 

 Western Lark Sparrow. Chondestes grammacus strigatus. 



St. Vrain. 

 White -crowned Sparrow. Zonotrichia leucophrys. 



St. Vrain. 

 Brewer Sparrow. Spizella breweri. 



Slayton's Ranch. 

 Spurred Towhee. Pipilo maculatus megalonyx. 



St. Vrain; Foothills west of Trilby. 

 Lazuli Bunting. Cyanospiza amoena. 



St. Vrain. 

 Lark Bunting. Calamospiza melanocorys. 



St. Vrain. 

 Cliff Swallow. Petrochelidon lunijrons. 



Boulder; Trilby; Chalk Bluffs, Grover. 

 Barn Swallow. Hirundo erythrogastra. 



Boulder; Trilby; Grover. 



