Trochilus colubris. Naino (Lake Umbagog). 1871. May 30- June 10. Rather common, breeding. 1872. June 3- 14. Quite common. Their courtships which we observed frequently are most interesting. The male poising about ten feet above the spot where they female is sit- ting darts down at an angle of about 45°, and passing an inch or two above her, rises on the opposite side, turns, poises a moment, and plunges again, repeating his shrill chirp incessantly. This is kept up for a minute or more when he either flies off, or settles lightly on some twig near his mate. 1874. Aug. 5. Shot a young bird in fall plumage. It was sitting on the top of a high spruce and kept up an incessant shrill scoop a note which I have never heard the bird utter before. " 21. They have become very abundant within a few days, " 24. One poised for a moment within a few inches of a sleeve of a bright-colored cardigan jacket which I was wearing, evidently taking this garment for a bank of brilliant flowers. This has happened to me once before recently. In neither case did the bird seem to discover its mistake until I moved slightly and frightened it. 1879. May 22. The Canada plum trees in the garden are in full bloom and their snowy mass of blossoms seems to have attracted all the Hummingbirds of this region. A per- feet swarm of them was collected there to-day; more than I ever say together before. One small but very full- blossomed tree seemed especially favored and there must have been at least twenty Hummingbirds about it at once, the sound of their wings producing an incessant humming like that of a swarm of bees. They were very tame per- mitting me to approach within five or six feet I think they spent the night in this particular tree for upon visiting it after it had become nearly dark I made out several perched among the slender twigs, their lit- tle forms distinctly outlined against the sky.