224 



UNIVERSITY OF COLORADO STUDIES 



TABLE II 

 Breeding Birds Occurring in the Yellow Pine Zone: 6,000-8,500 Feet 



Total, 70 



Sora 



Killdeer 



Dusky Grouse 



Western Mourning Dove 



Western Red-tail 



Golden Eagle 



Prairie Falcon 



Sparrow Hawk 



Long-eared Owl* 



Saw-whet Owl 



Rocky Mountain Screech Owl 



Western Horned Owl 



Rocky Mountain Pygmy Owl 



Rocky Mountain Hairy Woodpecker 



Batchelder's Woodpecker 



Red-naped Sapsucker 



Williamson's Sapsucker 



Red-headed Woodpecker 



Lewis's Woodpecker 



Red-shafted Flicker 



Poorwill 



Western Nighthawk 



W kite-throated Swift 



Broad-tailed Hummingbird 



Kingbird 



Say's Phoebe 



Olive-sided Flycatcher 



Western Wood Pewee 



Western Flycatcher 



Magpie 



Long-crested Jay 



Pinyon Jay 



Thick-billed Red-wing 



Western Meadowlark 



Brewer's Blackbird 



Characteristic, 13 



Cassin's Purple Finch 



House Finch 



Crossbill 



Pine Siskin 



Western Vesper Sparrow 



Western Chipping Sparrow 



Gray-headed Junco 



Mountain Song Sparrow 



Spurred Towhee 



Green-tailed Towhee 



Black-headed Grosbeak 



Lazuli Bunting 



Western Tanager 



Cliff Swallow 



Barn Swallow - 



Northern Violet-green Swallow 



Western Warbling Vireo 



Plumbeous Vireo 



Virginia's Warbler 



Yellow Warbler 



Macgillivray's Warbler 



Dipper 



Catbird 



Rock Wren 



Canyon Wren 



Western House Wren 



Rocky Mountain Nuthatch 



Pygmy Nuthatch 



Long-tailed Chickadee 



Mountain Chickadee 



Townsend's Solitaire 



Olive-backed Thrush 



Western Robin 



Chestnut-backed Bluebird 



Mountain Bluebird 



' Species printed in italic have been found chiefly in this zone. 



