1872 Upton, Maine. 71 June 2-14 Trochilus Colubris. Despite common; observed for the first time the courtship of these males which passings interfect or move about the branch on which the female was sitting, started down at an angle of 45 deg. almost brushing her back then rising on the opposite side, would turn, pause a moment and plunge down again, repeating this shrill chirrup incessantly. This was kept up for a minute or more, where he would either fly off or settle lightly on some twig near his mate. 7. Nyctacrus grinus. Took a male in a thicket of spruce & birch on the edge of the clearing; it was silent and shy. On the stage road down toward two individuals seen in Nanny and that other in an old orchard about 2 miles to the North of Bethel. 8. Empidonax traillii. On the swamps on top of the hill to the South of the lake, about a mile from the Lacy house found these birds in extraordinary abundance. In one place, especially comprising about three acres of alder thickets & with withering poplar saplings along the edge they seemed to absolutely swarm and after we had shot twenty third numbers did not appear diminished in the least. This old nests were everywhere but although at this time (June 18) they were evidently settled for the season we saw only one pair building (same 9). They were also quarrelsome, drove all other birds out of their retreats, kept low down in the bushes frequently flitting from twig to twig yet over them my inches above the ground, and launched not after insects come as often than the other flycatchers. They had a shrill,