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Max,. z9o3[ THE CONDOR 77 Himantopus mexicanus. Black-necked Stilt. One flock and some single birds seen at the lagoons near Ehrenberg. Tringa minutilla ? Saw a small flock of birds that appeared to be of this spec- ies flying over Big Sandy Creek in July. F. reunetes occidentalis ? Saw a big flock at a lagoon near Ehrenberg in August. Heleodromas solitarius (cinnamomeus?) Saw several solitary sandpipers along the lagoons of the Colorado, but neglected to shoot any. Numenius longirostris. Long-billed Curlew. Saw a small flock below Ehren- berg flying southward over the Colorado River. .?gialitis vocifera. Killdeer. More o? less common at all the streams passed. Lophortyx gambeli. Gambel Partridge. First seen in the Morongo Pass. Found thereafter at all places where water and food were obtainable by them. These partridges seem to find it difficult to live where water is not accessible to them. They were rather common in the Hualapai Mountains up to 65oo feet altitude. Two broods of young were seen at the foot of the Providence Mountains the latter part of May and many more along the Colorado River near Needles on our arrival there early in June. No other species of partridge was seen on the trip east of the range of L. californicus. Zenaidura macr0ura. Mourning Dove. Seen practically along the whole route traveled, though of course not plentiful in the deserts. Me10pelia leuc0ptera. White-winged Dove. The characteristic hoarse cooing of this dove was first heard at The Needles on the Californian side of the Colorado, but none were actually seen there. Seen at Little Meadows (alt. 5750). They were common on Big Sandy Creek, where they were feeding partly on the fruits of the giant cactus, and were known locally as the Sonora dove. Around }?hren- berg they were less common but I killed two at one shot there on the river bank. I did not happen to see any on the California side of the Colorado, though they of course occur on both sides of the river. I do not think this dove is found regular- ly west of the Colorado River bottom lands, though they probably straggle a short distance into the deserts. Columbigallina passerina pallescens. Mexican Ground Dove. Shot one and saw others on Big Sandy Creek, also saw them on Bill Williams River and I shot another on the Californian side of the Colorado below Ehrenberg. Cathartes aura. Turkey Vulture. Seen in many places, even over the deserts. Accipiter cooperi. Cooper Hawk. Seen only in the timber about the lagoons below Ehrenberg. Parabuteo unicinctus harrisi. Harris Hawk. Shot two near Ehrenberg, one in Arizona and the other in California and saw two others in California. They frequented large isolated cottonwoods standing near lagoons. They were not very shy. Buteo borealis calurus. Western Red-tailed Hawk. Seen sparingly in most of the region traversed. Buteo abbreviatus. Zone-tailed Hawk. The only one seen I shot on Big Sandy Creek. It was not wild, but perhaps this was accounted for by the fact that it was totally blind in one eye. This is the most northern record for this species known to me. Buteo swainsoni. Swainson Hawk. Saw the dried remains of one at Beale Spring. No other recognized.