_Nesting._--Not too much is known about the nesting habits of Townsend's warbler, but enough is known to indicate that nests reported in willows during the last century were evidently wrongly identified. The species is now known to nest only in firs, though possibly it may sometimes be found to select other conifers as nesting sites. Nests and eggs are still very scarce in collections. The first authentic nests were found by J. H. Bowles (1908) near Lake Chelan, Wash., on June 20, 1908. The two nests, each containing four newly hatched young-- were both placed about twelve feet up in small firs, one some five feet out on a limb, the other close against the main trunk. Both were saddled upon the limb, and not placed in a fork nor in a crotch. The construction of both nests was identical, and entirely different from any of the descriptions that I have read. They were firmly built, rather bulky, and decidedly shallow for the nest of a warbler. The material used appeared to be mostly cedar bark, with a few slender fir twigs interwoven. Externally they were patched with a silvery flax-like plant fiber, while the lining seemed to be entirely of the stems of moss flowers. To an eastern collector it resembled an unusually bulky and considerably flattened nest of the Black-throated Green Warbler, lacking any sign of feathers, however, in its construction. A nest with five eggs is in the Thayer collection in Cambridge, taken by C. deB. Green on Graham Island, British Columbia, June 24, 1912. It is described as placed "on top of the big limb of spruce tree," and is large, compact, and well-built, being made largely of fine plant fibers, mixed with strips of grasses, mosses, lichens, fine strips of inner bark, plant down, and a few spider cocoons--all firmly woven together and neatly and smoothly lined with long, fine, white hairs and one feather. It measures externally 2-1/4 inches in height and 3 by 3-1/2 in diameter; the cup is 1-1/2 inches deep and about 2 inches in diameter. A set in my collection now in the U.S. National Museum was taken by F. R. Decker in Chelan County, Wash., on June 23, 1923; the nest was about 15 feet up and 8 feet out on a limb of a fir tree and contained five fresh eggs. Both birds remained close while the nest was being taken. Two nests in the Doe Museum, at Gainesville, Fla., were taken by J. H. Bowles in Washington, 9 and 10 feet up in small, slender firs, June 2 and 4.