Dr. Joseph Grinnell (1914) says, referring to the Colorado Valley, where this sapsucker was evidently wintering among the willow thickets: “Willows were the trees attacked by this woodpecker; but in one case a single large mesquite, and the only one of many in the vicinity, had been selected for bleeding, and its main trunk and larger branches were plentifully bored. I visited this tree many times during the space of three days, March 2 to 4, opposite The Needles, and invariably found a sapsucker working about the borings. I shot two of the birds at this mesquite, and there was still one there the last time I visited the tree, although I had never seen but one at a time there.” W. L. Dawson (1923) remarks: “In lieu of maple sap the western bird makes heavy requisition on the fresh-flowing pitch of pine and fir trees. As for cambium, that of the aspen (_Populus tremuloides_) has marked preference, and the summer range of the bird, so far as it goes, is practically controlled by the occurrence of the tree. Inasmuch as this tree is short-lived and of slight economic importance, the depredations of the bark-eaters are not seriously felt.” Mr. Skinner says, in his Yellowstone Park notes: “I have seen the red-naped sapsucker pick and hammer on dead aspens and on the trunks of lodgepole pine for insects. On June 28, 1917, I saw one make frequent flycatcher-like sallies from an aspen out into the open.” _Behavior._--John H. Flanagan (1911) witnessed a rather remarkable performance by a red-naped sapsucker, such as I had not seen recorded elsewhere. He had chopped out a nest containing two fresh eggs and was intending to leave them for a possible addition to the set, as he had done successfully before, when one of the birds, “both of which remained in sight, flew to the tree, perched a moment upon the edge of the cut hole, then went in, and shortly reappeared with one of the eggs in its beak. It flew to a nearby stub, not more than forty feet from where” he “was sitting, calmly devoured the egg and dropped the empty shell.” _Winter._--Apparently the fall migration of this woodpecker consists largely of a withdrawal from the high altitudes, in which it breeds, to winter resorts in the lowlands. Major Bendire (1895) says: “During the winter months, I have occasionally observed a red-naped sapsucker in the Harney Valley, in Oregon, busily engaged in hunting for food among the willow thickets found growing along the banks of the small streams in that sagebrush-covered region, often long distances away from timber of any size.”