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 Jan., 9o5 [ THE CONDOR ing among willows where there was a mossy bog and several cottonwood trees, with tangled dogwood and other shrubbery surrounding the area. On June 3o I spent most of the day watching the Tennessee warblers in this swamp. The males only were seen, and though I searched every bit of the area under observation and the shrubbery for many yards around the places, it appeared that I did not get near a nest, for the male would manifest no anxiety, merely moving farther away when I gradually drew nearer and he would spend most of the time among the foliage. The songster would spend most ot the time among the stems in the lowest foliage of the swamp, apparently at a level of five to ten feet from the ground. The male Tennessee warbler is a most persistent songster, rivalling the red- eyed vireo in this respect. The song is very characteristic, as uttered by the dif- ferent performers in various localities of the swamp. It can be expressed as fol- lows: "Teh wit, tub wil, tub wit, lzee tzee lzee tzee, chee chee chee chee chee chee c,ee chee chee cbee," expanding in power to the close, as is usual with many war- bler songs. In the three weeks that I spent, more or less, in searching the swamp for nests of this warbler, I did not hear any variations of the loregoing song, except perhaps some slighting of the opening syllables, or an omission of one or more of the "chee" in closing. Sunday, July 3, was fair and warm, and I spent the forenoon in the swamp searching for warbler nests. On that day I saw the first female warbler. She came flitting in the medium-sized aspens, at the edge of one of the little openings, and was carrying a blade of dried grass in her mouth. As I had just then chanced on a nest of red-eyed vireo, I thought at first that I was dealing with the female owner of the nest. The little superciliary streak of white lent color to the illusion; indeed, this warbler is not unlike a small pattern of the red-eyed vireo. When she saw me she dropped her burden and chirped rather feebly around me. A