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MAR. I90$[ THE CONDOR 35 neetion with certain ceremonies. The western redtail (t?uleo borealis calurus) was seen daily, and on one occasion a few characteristic feathers lying beside a half-eaten jackrabbit showed almost conClusively the author of the good work The great horned owl (Bubo) was not .Seen, but its wierd notes were occasionally heard at dusk and early morn. Tracks were seen of the roadrunner (Geococcyx californi- anus) which is well known to the Mokis under the name of Hosh-bo-a. A solitary hairy woodpecker (Dryobales villosus subspec?) which busied itself among some pinyohs and junipers along the canyon wall was the only represent- ation of the family observed. A fine specimen of poorwill (Phalgnoptilus nuttalli) was secured on the evening of July ?9 as it was flying over the canyon bottom in front of the house. It would have been impossible to have seen it but for the light color of the ground over which it passed, like a fleeting shadow, iu pursuit of insects. The Mokis who saw the specimen were much interested in it and de- signated it by the name of Ho-witz-ko. Nighthawks were common and were heard booming every evening. A colony of white-throated swifts (,4cronantes rnelatw- leocos) bred in the holes in the canyon walls back of the house, and were almost always in sight, skimming rapidly along the edge of the mesa or darting out high over the valley into which, however, they rarely descended. A female black- chinned hummer (Trochilus alexandri)was secured on July 3I, from its perch on a dead-topped juniper, and a fine male rufous hummer (Selasphorus rufus) xvas killed July 3 among some flowers along the edge of a trail. Several other hummers were seen at different times, but at too great a distance for positive identification. Among the flycatchers the Arkansas kingbirds, ash-throated flycatchers and Say phoebes were seen, the latter, which lived among the giant boulders of the canyon walls, being the most abundant. Pinyon and Woodhouse jays were seen e?-ery day on the mesa.and a few were seen flying across the valley. Although the season was not far enough advanced for the pine nuts to contain kernels, nevertheless cones were found which had been mutilated by these jays. The raven (Corvus corax sinuatus) is one of the commonest birds in the valley, and on account of its great fondness for corn and melons is one of the most trouble- some to the Mokis. Hundreds congregate along the edges of the cliffs and other prominent places in the vicinity of the gardens, and should the old women who are placed on guard to watch the fields from early morn until nightfall relax their vigilance for a moment, the birds are sure to take advantage of the opportunity. The gray vireo ( 14'reo vicinior) was tolerably common, though its presence might easily have been overlooked except for the characteristic song which was often heard while the birds remained hidden amid the dense foliage of the pinyon and juniper. A thrasher, which the Mokis called Kot~to-zi, was not uncommon, but was extremely wary and difficult of approach. It was not satisfactorily identified until July 31 when a chance shot secured a specimen which proved to be the Ben- dire thrasher (Toxostoma bendirei). This capture would have been a surprise but for the taking of an immature bird at Holbrook a short time previously. This species, which is commonest throughout the area occupied by the giant cactus, evi- dently has extended its range to this remote corner of Arizona by a route along the Colorado and Little Colorado Rivers and their tributary valleys. The following list includes all the species observed. Though the number rep- resented is not large and the species are not especially interesting, the fact that the list covers a comparatively little known region is considered a sufficient excuse for its publication: