Tringa bairdii. Lake Umbagog, Maine. 1894. Soon after dinner I took the canoe and my gun and sailed Sept. 12. across to the Outlet on reaching which I skirted closely a space of bare but some-what hillocky, muddy ground where I have often found waders of various kinds but on which I could see, on this occasion, only a solitary Least Sandpiper. I then ran the canoe ashore and took down the sail. While I was thus engaged the canoe drifted back a few yards when on look- ing up I was greatly surprised to see within fifteen or twenty feet, and on the very ground which I had just scrutinized so closely, a flock of eight Sandpipers among which I at once recognized two Pectorals and four Ereunetes. The remaining two birds had an unfamiliar look but I quickly became convinced that they were Baird's Sandpipers as turned out to be the case. I watched the flock for at least ten minutes before disturbing them. At first they all stood perfectly motionless regarding me with timid suspicion, apparently, but presently they scattered about and began feeding. The Ereunetes ran nimby from place to place showing themselves freely along the water's edge. The Pectorals acted very differently, moving at a slow walk and keeping back among the hillocks, following the depressions of the ground and crouching so low as often to be hidden from my sight, but occasionally showing their heads and necks, as they stood erect to look at me. The move=