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154 TIIE CONDOR Vol. XIX pinyon about three feet from the trunk and nine feet above the ground. It is better made and bulkier than any of those found last year. "The stomach of the female contained particles of small mammal bones, about 35 per cent, vegetable matter, 35 per cent, beetles or insects, 10 per cent, gravel, 10 per cent, and small rodents' teeth, 10 per cent. The particles of bone and teeth very likely were disgorged by an owl." Upon receipt in Denver of the nest, bird and eggs taken in 1916, the eggs were at once prepared, but the shells of two of them, just ready to hatch, were Fig. 53. NEST ANI) EGGS OF CLARKE NUTCRACKER. SAME SET AS IN FIG. 52, ABOUT so thin and fragile they could not be saved intact. They were the thinnest and most fragile shells of their size I ever encountered, but whether character- istic of the species or solely due to advanced incubation I cannot say. The third egg, being rotten, was saved intact. The Nest: Outside structure composed of old dry gnarled sticks and twigs of cedar, of varying sizes, s.ecurely bound together with strips of cedar bark. Walls approxinmtely two inches thick, woven exceptionally tight. The