In Massachusetts it has so far been found in only a few restricted localities, Andover, Lynn, and Hudson, though it undoubtedly occurs elsewhere. About the time Wilson obtained his first specimen, a living bird of this species flew into the parlor of the late Colonel Thomas H. Perkins of Brookline, and is now in the collection of his grandson, Dr. Cabot. The latter gentleman states that when he first began making collections this Warbler was a very rare visitant to his neighborhood, but has of late become much more common, though varying greatly in this respect in different seasons. Specimens have been obtained in Western Iowa by Mr. H. W. Parker, of Grinnell. A few instances of its occurrence west of the Mississippi Valley are known. One of these was by Xantus near Fort Tejon; another near Lake Tahoe, in the Sierra Nevada, by Mr. Gruber; and in the East Humboldt Mountains, Nevada, by Mr. Ridgway. Specimens of this Warbler were obtained in the winter by M. Boucard at Oaxaca, Mexico. In the summer of 1854, Mr. Charles S. Paine found it breeding in Randolph, Vt., but was unable to discover the nest. “They spend the summer,” he wrote, “among low bushes, and probably build their nests among the thickets. I have watched their movements on several occasions. Once I detected an old bird with food in her bill about to feed her young. I could hear the young birds, yet was unable to find the nest.” Two years later, Mr. George O. Welch, of Lynn, found the nest of this Warbler on the ground in a small thicket. It contained young partially fledged, and one egg unhatched. The nest was built in a slight depression, in a dry place, among fallen leaves and in the shelter of a thicket of young oak-trees. This egg in shape was of a rounded oval, and measured .59 by .50 of an inch; one end was slightly more pointed than the other. The ground-color was white, slightly tinged with pink, and marked over the entire surface with purplish-brown dots. Around the larger end these spots form a beautiful wreath of confluent markings. Since then other nests have been found in the same locality, all on the ground and built in like situations. They have a diameter of four and a height of two inches. The cavity has a diameter of two and a depth of one and a quarter inches. The outer portions are built of dry mosses, intermingled with strips of the bark of the wild grape and the red cedar and a few herbaceous twigs, and lined with a thick layer of dried carices, small leaves of the white pine, and fine grasses. The whole structure is loosely put together. The nests are generally concealed by overarching leaves, which, however, form no part of the nest itself.