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May, 1918 THE SHORT-EARED OWL IN SASKATCHEWAN 103 Two days later, May 22, I was drilling flax in another part of the same field, where it had not yet been disced. I was standing on the seed box and keeping a weather eye open for ducks or other birds to flush, when an owl flew up from beside the horses. A short search revealed the nest, containing seven fresh, pearMike eggs. This nest varied little from the first one found, the main difference being a less amount of lining. May 31 found me disting in another field of wheat stubble about a mile from that in which the first two nests were found. While driving back and forth across the field, which, by the way, was a mile long and a mile wide, I no- ticed a number of white objects scattered within a radius of three feet on ground already disced. Upon examination they proved to be owl eggs and only one of the six eggs found was damaged in the least. The nest, located by some white feathers, did not differ markedly from. the others. The eggs were incu- bated one-half. On Sunday, June 3, another workman on the farm told me of a nest he had noticed the day before. I immediately saddled a pony and rode out to have a look. On that part of the field to which I was directed we had burned off the stubble a week previous. All through the burnt part were small patches of stubble which had been too damp to burn, and it was in one of these that I saw the owl brooding on her nest and glaring at me with wide-open eyes. I rode within ten feet of the nest before she flew off and disclosed a set of seven eggs. Incubation was well along, It was on June 4 that I found a third owl nest, or more precisely, the re- mains of a nest, in this same field. I was dragging the disted ground with a six-horse, spike-toothed harrow when I noticed some eggs disappearing under the machine. I managed to find two whole eggs and several shells scattered about, and one week-old owl nearly covered with soil. A nest was manufactured in short order and the owl installed. On the next trip down the field the old bird was seen brooding on her new nest as if nothing had happened. Ravinia, Illinois, December 12, 1917. NOTES ON THE NESTING HABITS OF THE WHITE-THROATED SWIFT IN COLORADO By WM. C. BRADBURY WITI4 SIX PHOTOS FTER the excellent article by Mr. Hanna on'the White-throated Swift in the January, 1917, number of THE CON?)OR, it might seem superfluous to chronicle my own observations, but the Editor has suggested these might prove interesting, if only for comparison or corroboration. Early in June, 1916, Mr. J. D. Figgins, Director of the Colorado Museum of Natural History, returning from a mountain trip reported a number of White- throated Swifts (Aeronautes melanoleucus) about a promising nesting site near Hot Sulphur Springs, Grand County, in this state. After fully discussing the matter, I provided a quite complete collecting equipment for cliff work, in- eluding block and tackle, sailor swing outfit and accessories good for two hun-