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54 THE CONDOR Vol. XVII tirely missing, in the parts of the mountains covered by these notes; conse- quently the only time I met with this bird was during a migratory "wave", September 29, 1914, when two individuals in company with a dozen or more birds of several species alighted to feed among the trees of the grove through which I was passing. They were quickly distinguished by the characteristic notes, often uttered; whereas other species present were quite silent. Dendroica discolor. Prairie Warbler. A common summer visitant, found to the summit of the range, if abandoned clearings, old orchards, and lumbered over areas were present. Arrived about April 28; sang constantly up to May 25; departed very early; none seen after July. Seiurus aurocapillus. Ovenbird. Excepting for such areas as had been. recently cut over, Ovenbirds were everywhere present as summer visitants wherever the forest remained. Reached the region by the middle of April, and did not depart until September 15. Seiurus noveb0racensis notabilis. Grinnell Water-Thrush. The other members of the genus had left when this species arrived. It was recorded September 18 and 21, 1914, a single bird being seen on each date. Seiurus motacflla. Louisiana Water-Thrush. Common summer visitant; confined to the vicinity of the larger streamlets. While its alarm note was nearly always sounded before I-could locate the bird, yet, after the. nesting period had passed, it was much more easy to approach than before. Young, able to fly, were found June 4; later broods appeared up to the end of July. A few birds showed evidence of partial molt, even in April; by the 10th of 'July, practically all adults were in ragged plumage; but by the time of de- parture (after August 15), the new plumage was fully acquired. Oporornis formosus. Kentucky Warbler. A favorite location for this at- tractive species was a shaded slope where numerous springs issued forth; it was also frequently found in low situations along streams. The earliest arrival was recorded April 22. Young were about June 6. Departs early; but a few birds lingered until September 7. One of the ra?ost confiding of small birds. Oporornis philadelphia. Mourning Warbler. It is pretty certain that this is one of many species of migratory birds preferring to pass around., rather than over, the range. With habits and movements resembling the Hooded Warbler, it was difficult to distinguish between the two species in the dense underbrush shaded by forest tre?es. So, of the limited number ven- turing into the region, few were seen. But records are at hand showing its presence from the end of April, to as lat? as May 21. Geothlypis trichas trichas. Maryland Yellowthroat. Howell writes of this as one of the commonest of small birds within the state; yet ] rarely met with it in the higher parts of the range. Several were seen during late April, 1913; and one was secured from a brush pile in a pasture May 21; 1914. Icteria vixens virens. Yellow-breasted Chat. A well distributed summer visitant; found on the highest hills, if bramble patches existed. One of the later arrivals, none being noted before April 30; but the bulk of its number reached the mountains together. Young, fully leathered, seen July 18. Chats left for the south before September. Wilsonia citrina. Hooded Warbler. Chooses rather drier woodlands than the Kentucky Warbler, but equally numerous, also a?riving earlier and departing later. Extreme dates were April 18 and September 24. Males