BIRDS OF BOULDER COUNTY, COLORADO 



223 



TABLE I 



Breeding Birds Occurring in the Plains Zone: 5,000-6,000 Feet 



Total, 72 Characteristic, 37 



Pied-billed Grebe* 



Blue-winged Teal 



Bittern 



Least Bittern 



Great Blue Heron 



Black-crowned Night Heron 



Virginia Rail 



Sora 



Coot 



Wilson's Phalarope 



Wilson's Snipe 



Spotted Sandpiper 



Killdeer 



Bob-white 



Western Mourning Dove 



Turkey Vulture 



Western Red-tail 



Swainson's Hawk 



Sparrow Hawk 



Rocky Mountain Screech Owl 



Western Horned Owl 



Burrowing Owl 



California Cuckoo 



Belted Kingfisher 



Red-headed Woodpecker 



Red-shafted Flicker 



Western Nighthawk 



Kingbird 



Arkansas Kingbird 



Say's Phoebe 



Western Wood Pewee 



Traill's Flycatcher 



Desert Horned Lark 



Magpie 



Western Crow 



Bobolink 



Cowbird 



Yellow-headed Blackbird 



Thick-billed Red-wing 



Western Meadowlark 



Bullock's Oriole 



Brewer's Blackbird 



Bronzed Grackle 



House Finch 



Goldfinch 



Arkansas Goldfinch 



Pine Siskin 



Western Vesper Sparrow 



Western Grasshopper Sparrow 



Western Lark Sparrow 



Western Chipping Sparrow 



Mountain Song Sparrow 



Black-headed Grosbeak 



Lazuli Bunting 



Lark Bunting 



Cliff Swallow 



Barn Swallow 



Bank Swallow 



Rough-winged Swallow 



White-rumped Shrike 



Western Warbling Vireo 



Plumbeous Vireo 



Yellow Warbler 



Western Yellow-throat 



Long-tailed Chat 



Sage Thrasher 



Western Mockingbird 



Catbird 



Brown Thrasher 



Rock Wren 



Western House Wren 



Western Robin 



* Species printed in italic have been found chiefly in this 2 



