The song is uttered while feeding, the bird seldom arresting his search for food, but turning his head this way and that scanning each leaf and stem. It is often a less spirited song than that of many other warblers, seeming to be a sort of soliloquizing accompaniment to the pressing duties of sustaining life, but it is none the less a pleasing song. There is a somewhat close resemblance to some phrases of the yellow warbler's song in the rendering of the chestnut-side, but a little attention and a discriminating ear will readily distinguish the difference both in quality and in quantity. The song is more often heard on the college campus here than in the woods, and there it sounds something like this: "_Wee-chee wee-chee wee-chee-e-e-e_," with the accent on the first syllable of each phrase. This, in common with other warbler songs, cannot be well represented by a whistle, but rather by hissing or whispering the syllables between the closed teeth. The pitch is too high for my whistle. In the woods a common form of the song is, "_te te te te wee chu_;" and occasionally, "_to wee to wee to wee tee e-e-e_." In the woods the song seems to be far more spirited than in the village, as well as being different. This difference may be rather due to the fact that the first migrants are those that visit the village, while the later ones are found in the woods. It is well known that with many of the warblers the first singers, or at least the first songs heard, are often different from the later ones. In the vicinity of Oberlin, Ohio, this little warbler makes his appearance about the fifth of May and does not leave for the north until the last week of May. It can not be called common at any time, some years not being seen at all, but may usually be found in the shrubbery fringing woods, or in the shade trees in the village. None have been found during the summer months, and it is doubtful if any remain to nest. The winter is spent in the Bahamas and Mexico, and from there southward. The species ranges north to Manitoba, Ontario, and Newfoundland, and west to the plains, being a bird of eastern North America. It breeds from New Jersey and Illinois northward. I once found it breeding in central Iowa. The nest resembles that of the yellow warbler, both in situation and composition. It is usually placed in the fork of a bush or shrub from two to eight or nine feet from the ground, made of the fibrous bark of the milk-weed, or some other hempen material, grass and sometimes leaves, lined with some sort of plant down and long hairs. The bark fibers are wound about the bush twigs, securely lashing the nest into the crotch. The four or five eggs are of a creamy-white color, with a wreath of reddish and dark brown spots and dots around the larger end, the spots becoming smaller and less numerous both ways from this wreath. They average about .66 × .50 of an inch.