24. Mountain Bluebird 3 Vireo 2 (coll. 1). Black-throated Gray Warbler (8) Macgillivray Warbler 2 Audubon Warbler 3 Brewer Blackbird several Western Tanager several Black-headed Grosbeak (Coll 1, 5) sexes others Green-tailed Towhee (5) Spotted Towhee (5) Gray-headed Junco 3 coll 1. Chipping Sparrow- (6) Cassin Finch 18 shot, couldn't retrieve + The Prairie Falcon kept mainly around the ridges where there were escarpments and rocky outcrops. The Broad-tailed Hummers were birds of the canyons where deciduous thickets and Amelanchier grew. These birds were commonest in places where water seepages were found. Several species frequented only the densest and best developed tracts of pinyon. The Hairy Woodpecker (and the White-breasted Nuthatch fell into this category. These two species are ordinarily not found as resident of the pinyon belt, but were here perhaps because of the unusual denseness of the pinyon. The Wright Flycatcher was found on the north, mahogany-covered slope where pinyon