Ixxii INTRODUCTION 



Dolichonyx*oryzivorus : Bobolink. — Occasional summer resident. 



Molothrus ater : Cowbird. — Common simmier resident. 



Xanthocephalus xanthocephalus : Yellow-headed Blackbird. — Not com- 

 mon. 



Agelaius phoeniceus : Red- winged Blackbird. — Common summer resident. 



Sturnella magna neglecta : Western Meadowlark. — Common summer resi- 

 dent. 



Icterus huUocki : Bullock Oriole : Tolerably common summer resident. 



Scolecophagus cyanocephalus : Brewer Blackbird. — Common. 



Quiscalus quiscula (eneus : Bronzed Grackle. — Rare. 



Coccothraustes vespertinus montanus : Western Evening Grosbeak. — Visit- 

 ant ; does not breed. 



Carpodacus mexicanus frontalis : House Finch. — Abundant summer resi- 

 dent ; sometimes also winter resident. 



Leucosticte tejjhrocotis : Gray-crowned Leucostiete. — Frequent winter 

 visitor. 



Acanthis linaria : Redpoll. — Occasional winter visitor. 



Astragalinus tristis : Goldfinch. — Common summer resident. 



Astragalinus psaliria : Arkansas Goldfinch. — One taken in Cheyenne. 



Spiniis pinus : Pine Siskin. — Regular autumn visitor. 



Passerina. nivalis : Snowflake. — Regular winter visitor, often in very large 

 flocks. 



Calcarius ornatus : Chestnut-collared Longspur. — Summer resident ; not 

 common. 



Rhynchophanes mccownii : McCown Longspur. — Abundant summer resi- 

 dent. 



Pooecetes gramineus conjinis : Western Vesper Sparrow. — ; Common mi- 

 grant ; probably breeds near. 



Ammodramus sandwichensis alaudinus : Western Savanna Sparrow. — Com- 

 mon migrant. 



Chondestes grarnmacus strigatus : Western Lark Sparrow. — Common mi- 

 grant. 



Zonotrichia lencophrys gambelii : Gambel Sparrow. — Common migrant. 



Spizella monticola ochracea : Western Tree Sparrow. — Common migrant. 



Spizella socialis arizonce : Western Chipping Sparrow. — Tolerably com- 

 mon migrant. 



Spizella pallida : Clay-colored Sparrow. — Common ; probably breeds. 



Spizella hreweri : Brewer Sparrow\ — Tolerably common. 



Junco hyemalis : Slate-colored Junco. — Tolerably common. 



Junco hyemalis connectens : Intermediate Junco. — Tolerably common. 



Junco mearnsi : Pink-sided Junco. — Common migrant. 



Amphispiza belli nevadensis : Sage Sparrow. — Rare visitor. 



Melospiza melodia montana : Mountain Song Sparrow. — Tolerably com- 

 mon migrant. 



Melospiza lincolnii : Lincoln Sparrow. — Common migrant. 



Oreospiza chlorura : Green-tailed Towhee. — Common migrant. 



Zamelodia melanocephala : Black-headed Grosbeak. — Occasional city vis- 

 itor only. 



Cyanospiza amoena : Lazuli Bunting. — Summer resident ; not many nest. 



Calamospiza melanocorys : Lark Bunting. — Abundant; breeds. 



Piranga ludoviciana : Louisiana Tanager. — Common migrant. 



Piranga erythromelas : Scarlet Tanager. — Rare visitor. 



Progne subis : Purple Martin. — Rare visitor. 



Petrochelidon lunifrons : Cliff Swallow. — Common ; breeds. 



Hirundo erythrogastra : Barn Swallow. — Common ; breeds. 



