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July, 1912 NOTES ON WADING BIRDS OF BARR LAKE REGION, COLORADO 129 published breeding records for the state except that {)f Cooke. Although there is small doubt that the bird breeds sparingly ou the plains east of Denver. it can hardly be called common anywhere in Colorado. For these reasons description of this nest may be of value. The nest which was found June 28, 1907, was located in the midst of a rather thick tuft of sand grass, blue stem, and other dry-land grasses, on open rolling' prairie well covered with grass, weeds, etc., and fully two miles from any body of water. It was on the west side of a small knoll on rather high ground and was built in an inconspicuous spot. No evidence of it could be seen fifteen paces away. The nest was a rather deep depression in the ground sparingly lined with fine weed steins, grasses and a few bits of manure and one or two small feathers. Fig. 55. YOUNG KILLDEERS JUST OUT O1?' EGG The tops of the eggs were about flush with the surface of the ground. The eggs were not all arranged with the lyoints turned in toward the center. When the nest was first found the bird flushed at a distance of about fifteen yards, and its cries as it rose in the air brought three other birds within a few minutes. At no time did the birds come anywhere near us, and as soon as we left the nest they flew back to it from a point about a quarter mile distant. On the second visit the parent left the nest when we were fully thirty yards away, and flew off close to the ground with short rapid wing-beat? (similar to the flight of a Spotted Sand- piper) and lit about a hundred yards away. While flying it continually uttere-.l a querulous musical whistle. Not long afterward, either this bird or the other parent flew up to a height of fully one hundred yards and circled about us two or