enough to cause the ends of the branches on which they sat, (and these were not less than three feet away from the birds in each instance) to vibrate through an arc 1 to 2 inches long. Curiously enough, both birds were very sleepy, one of them just before singing had its head "under its wing" (No.1). A mowing machine cutting the grass in the bare field below took occasion to move into the immediate vicinity and I think its noise stimulated the songsters. No.1, identifiable at present by the fact that its superciliary stripe shows practically no contrast in color with its surroundings and does not project like an eyebrow, tried to sing, sleep and stand on one leg on the branch, all at the same time. This proved to be an impossible accomplishment. After the mower went away, both birds stopped singing (they had been singing at the same time) and came out to eat. No.1 was so tame when it jumped up into my hand and stayed so long digging worms out of the box that I could choose my own distance and point of view from which to inspect it closely. The outer tail coverts are mere films; a light breath blows them aside and reveals the bases of the tail feather shafts still in their sheaths, although the sheaths are peeling off. June 25th. At 8:30 I went into the glade and sat on a cushion. All three young thrashers came to me immediately, climbing upon my knees and arms. One of them in particular was insistent upon having worms from the box which I held on my knee. I could not identify this bird positively, but think it was No.1. His eye-color is changing, I think, as appears to be the case with the others--although I am not certain as yet. The one in my lap fought vigorously to get at the worms, which I would allow him to have if he could get them out between my fingers. He attacked every portion of me within reach, making long white marks through the tan on the backs of my hands and drawing blood in two places. He pecked my fingers and wrists, pulled my neck-tie, tried to get the box away from me, hammered my