the nests were from three feet and three inches to twenty-five feet from the ground, oaks seeming the favorite in southern Oregon and fir near Tacoma. The usual situation is in a small clump of leaves that is just large enough to almost completely conceal the nest, and yet so very small that a crow or jay would never think of anything being concealed in them. * * * The nests externally are about 3 × 2-3/4 inches and internally 1-3/4 × 1-3/4 inches in diameter and depth. They are composed externally of grass and weed-stalks, that must be several seasons old, (being bleached and very soft) moss and feathers; and lined with feathers (one had evidently been lined from a dead Stellar jay), horse, cow and rabbit hair or fur, and sometimes the very fine stems of the flowers of some kind of moss. The male has never been seen to assist either at nest-building or incubation. In the Yosemite region, where Grinnell and Storer (1924) found the black-throated gray warbler in fair numbers among the golden oaks on the north walls of the Valley, they found a nest "placed 5 feet 6 inches above ground in a mountain lilac (_Ceanothus integerrimus_) bush against a main stem." From southern California, James B. Dixon writes to me: "This bird breeds sparingly from 2,500 feet to the tops of our mountain ranges in San Diego, Riverside and San Bernardino Counties. During my observations since 1898, I have seen but five nests. One was in a live oak tree, two in manzanita bushes and two in golden oak saplings." A nest in Riverside County, at 5,500 feet elevation, was in "a scrub growth area which was well wooded with sapling golden oak and manzanita, buck thorn, and other sparsely growing bushes." The nest was "located 12 feet from the ground in a deep, vertical crotch of a golden oak sapling, and could be seen from only one angle, much like the nest of a gnatcatcher or wood pewee." Another nest was found "in the dense growth of a young manzanita bush. * * * The locations of the two nests were extremely different, one was carefully concealed in a comparatively bare oak sapling, and the other in the dense foliage of a rank-growing young manzanita bush."