468 Colorado College Publication 



bon's Warbler, Black-throated Gray Warbler, MacGillivray's 

 Warbler, Western Yellow-throat, Long-tailed Chat, Pileo- 

 lated Warbler, Redstart, Pipit, Mockingbird, Catbird, Brown 

 Thrasher, Rock Wren, Western House Wren^ Ruby-crowned 

 Kinglet, Audubon's Hermit Thrush, Chestnut-backed Bluebird. 



C — Birds which breed within the County, and occa- 

 sionally winter, though usually going further south, 7 species. 

 Spotted Sandpiper, Marsh Hawk, Lewis's Woodpecker, West- 

 ern Meadowlark, Mountain Towhee, Western Robin, Moun- 

 tain Bluebird. 



D — Birds not known to breed within the County, but 

 found more or less commonly in winter, 28 species. Wilson's 

 Snipe, Goshawk, Western Goshawk, Rough-legged Hawk, 

 Bald Eagle, Pigeon Hawk, Richardson's Pigeon Hawk, Short- 

 eared Owl, Rocky Mountain Screech Owl, Gray-crowned Ro,sy 

 Finch, Hepburn's Rosy Finch, Black Rosy Finch, Redpoll, 

 Alaska Longspur, Chestnut-collared Longspur, McCown's 

 Longspur, Western Tree Sparrow, White-winged Junco, Slate- 

 colored Junco, Intermediate Junco, Shufeldt's Junco, Mon- 

 tana Junco, Pink-sided Junco, Arctic Towhee, Bohemian Wax- 

 wing, Northern Shrike, Prairie Marsh Wren, Western Golden- 

 crowned Kinglet. 



E — Birds not known to breed within the County, but 

 more or less regular transients passing through in spring and 

 autumn, 52 species. Eared Grebe, Pied-billed Grebe, Loon, 

 Black-throated Loon, Ring-billed Gull, Forster's Tern, Black 

 Tern, White Pelican, Merganser, Mallard, Gadwall, Baldpate, 

 Green-winged Teal, Blue-winged Teal, Cinnamon Teal, 

 .Spoonbill, Pintail, Redhead, Canvas-back, Lesser Scaup, Gold- 

 en-eye, BufHe-head, Ruddy Duck, Bittern, Great Blue Heron, 

 Snowy Egret, Black-crowned Night Heron, Little Brown 

 Crane, Coot, Northern Phalarope, Wilson's Phalarope, Long- 

 billed Dowitcher, Baird's Sandpiper, Least Sandpiper, Semi- 

 palmated Sandpiper, Greater Yellow-legs, Yellow-legs, West- 

 ern Solitary Sandpiper, Western Willet, Long-billed Curlew, 

 Black-bellied Plover, Baird's Sparrow, Western Grasshopper 



