_Nesting._--Herbert Brandt (1943) found two nests of the eastern orange-crowned warbler along the Yukon River in Alaska, about 20 miles up from the sea, on July 1, 1924. His first nest contained five eggs, advanced in incubation. The nest was near the bank of the river, "in a bush 18 inches from the ground. The nest was loosely made of coarse grass held together with bark strips, silvery plant down, and a few feathers, one of which was a mottled feather of the Northern Varied Thrush. Twenty feet away was another nest of the same species, which held three young just hatched and two pipped eggs. * * * The measurements of the two nests cited are: height, 2.25 to 3.00; outside diameter, 3.5; inside diameter, 1.75; and depth of cup, 1.50 to 1.75 inches." MacFarlane's (1908) nests, found on the Anderson River, "held from four to six eggs each, and they were made of hay or grasses lined with deer hair, feathers and finer grasses, and were usually placed in a shallow cavity on the ground in the shade of a clump of dwarf willow or Labrador tea." Baird, Brewer, and Ridgway (1874) write: The nests of this species, seen by Mr. Kennicott, were uniformly on the ground, generally among clumps of low bushes, often in the side of a bank, and usually hidden by the dry leaves among which they were placed. He met with these nests in the middle of June in the vicinity of Great Slave Lake. They were large for the size of the bird, having an external diameter of four inches, and a height of two and a half, and appearing as if made of two or three distinct fabrics, one within the other, of nearly the same materials. The external portions of these nests were composed almost entirely of long, coarse strips of bark loosely interwoven with a few dry grasses and stems of plants. Within it is a more elaborately interwoven structure of finer dry grasses and mosses. These are softly and warmly lined with hair and fur of small animals. E. A. Preble (1908) reported a nest found near Fort Resolution that "was placed among thick grass on a sloping bank, and was composed outwardly of grass and _Equisetum_ stems, with a layer of finer grass and with an inner lining of hair." Several nests have been reported from points farther south as being of this warbler, but these are probably all referable to the Rocky Mountain subspecies _Vermivora celata orestera_.