The black-throated green warblers have seemingly become regular summer residents of Long Island, for after discovering them on my place I found that two or three bird-loving neighbors were already familiar with them; and I heard them on several different occasions as I rode through the country roundabout. I already knew as summer residents in my neighborhood the following representatives of the warbler family: the oven-bird, chat, black-and-white creeper, Maryland yellow-throat, summer yellow-bird, prairie warbler, pine warbler, blue-winged warbler, golden-winged warbler (very rare), blue yellow-backed warbler and redstart. The black-throated green as a breeder and summer resident is a newcomer who has extended his range southward. But this same summer I found one warbler, the presence of which, if more than accidental, means that a southern form is extending its range northward. This was the Dominican or yellow-throated warbler. Two of my bird-loving neighbors are Mrs. E. H. Swan, Jr., and Miss Alice Weekes. On July 4th Mrs. Swan told me that a new warbler, the yellow-throated, was living near their house, and that she and her husband had seen it there on several occasions. I was rather skeptical, and told her I thought that it must be a Maryland yellow-throat. Mrs. Swan meekly acquiesced in the theory that she might have been mistaken; but two or three days afterward she sent me word that she and Miss Weekes had seen the bird again, had examined it thoroughly through their glasses, and were sure that it was a yellow-throated warbler. Accordingly on the morning of the 8th I walked down and met them both near Mrs. Swan’s house, about a mile from Sagamore Hill. We did not have to wait long before we heard an unmistakably new warbler’s song, loud, ringing, sharply accented, just as the yellow-throat’s song is described in Chapman’s book. At first the little bird kept high in the tops of the pines, but after a while he came to the lower branches and we were able to see him distinctly. Only a glance was needed to show that my two friends were quite right in their identification and that the bird was undoubtedly the Dominican or yellow-throated warbler. Its bill was as long as that of a black-and-white creeper, giving the head a totally different look from that of any of its brethren, the other true wood-warblers; and the olive-gray back, yellow-throat and breast, streaked sides, white belly, black cheek and forehead, and white line above the eye and spot on the side of the neck, could all be plainly made out. The bird kept continually uttering its loud, sharply modulated, and attractive warble. It never left the pines, and though continually on the move, it yet moved with a certain deliberation like a pine warbler, and not with the fussy agility of most of its kinsfolk. Occasionally it would catch some insect on the wing, but most of the time kept hopping about among the needle-clad clusters of the pine twigs, or moving along the larger