io6 Wyoming Birds. 



534. Snow Bunting (Snow-flake). Rare winter resident in Crook 



County. 

 536a. Alaska Longspur. Rather uncommon winter resident. 



538. Chestnut-collared Longspur. Occasional migrant in Weston 



County. 



539. McCown's Longspur. Common migrant in Crook County; 



rare in Weston County. Probably breeds in Crook County. 

 540a. Western Vesper Sparrow. Common summer resident. 

 54Zd. Western Savannah Sparrow. Uncommon summer resident. 

 546a. Western Grasshopper Sparrow. Summer resident. Rather 



common locally. 

 552a. Western Lark Sparrow. Common summer resident in Weston 



County. 



553. Harris's Sparrow. Very rare in Crook County; never seen 



in Weston. 



554. White-crowned Sparrow. Common migrant in Weston 



County. 

 559a. Western Tree Sparrow. Abundant winter resident. 

 560a. Western Chipping Sparrow. Common summer resident. 

 562. Brewer's Sparrow. Common summer resident. 



566. White-winged Junco. Common resident. 



567. Slate-colored Junco. Not uncommon winter' transient. 

 567g. Pink-sided Junco. Rare winter resident. 



581a. Desert Song Sparrow. Very rare in Crook County, and rarer 



in Weston. 

 588. Arctic Towhee. Abundant summer resident. 

 596. Black-headed Grosbeak. Common summer resident. 

 599. Lazuli Bunting. Rare summer resident. 



604. Dickcissel. Very rare summer resident in Crook County. 



605. Lark Bunting. Common summer resident. 

 607. Western Tanager. Common summer resident. 



612. Cliff Swallow. Common summer resident in Weston County. 



613. Barn Swallow. Common summer resident. 



615. Northern Violet-green Swallow. Common breeder in both 



counties. 

 618. Bohemian Waxwing. Abundant winter habitant in Crook 



County. 

 621. Northern Shrike. Rare winter resident. 

 627a. Western Warbling Vireo. Common summer resident in Crook 



County. 



