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 206 THE CONDOR Vol. XX tree I found the female incubating and her mate in the thick foliage but a few inches above the nest. Neither moved until I actually touched the bird on the nest, which still contained but two eggs. The male left and was not again seen, but the female remained close at hand, either in the nest tree or one nearby, while I took the nest and eggs, and then collected her. The nest was in the top of a white spruce, fifty-five feet above the surface of the snow, which was fourteen feet deep on the level. The trunk of the tree was not over three inches in diameter at the nest site. The eggs on blowing proved to contain well developed embryos, probably one-half, and were doubtless part- ly incubated on April 15. The ovaries of the female were very small. For 1 2 3 4 Fig. 43. EOOS 0r THE ROCKY MOUiITAI JA (SETS nOS. 1, 2 AnD 3) AnDj FOR cormson, OnE Or THE CNDA JAY (SET nO. 4). about two weekslprior to collecting this set, it had been storming almost daily." NESTS No. 1. Outside measurements 7x9 inches, total depth 31 inches, base and outside framework to within an inch of top, composed chiefly of pine and other twigs. Nest proper, outside diameter, 5x51 inches, walls about 1 inches thick, cup diameter 3 inches, with depth 13/ inches; composed of fine grasses, cotton strings of several sizes, and large amounts of unravelled rags and white rabbit hairs; lined with same material and feathers. There are several pieces of cot-