The young leave the nest soon after hatching and are thoroughly well concealed by their mimicry of the confusing mixture of mosses, lichens, and other forms of vegetation which abounds and are so well intermingled on these islands. It requires much patience and a close scrutiny to detect a crouching young, even when it is directly within reach. Obedient to their mother's cries they flatten themselves with head and neck extended; with each yard of the ground precisely similar in pattern and color with every other yard, and the parents, especially the female, trying their best to coax us in other directions, and the uncertainty as to the exact location of the young, all combine against the collector, so that few specimens reward a tramp that seems exasperatingly needless. The young will not move, though one stands with the foot touching them, but when once handled and released they scamper off with all the quickness their long legs can give them. When we invade the vicinity of a nest or young it is amusing to watch the antics of the female. She invariably flies in front and flutters with feigned lameness but a few feet away. If the ground is rough it is more amusing to watch the precipitancy of her flight until she disappears in a hollow, to reappear in a moment on the other side, cautiously turning round and eying us to see if we are following. She always keeps in front of us, no matter which way we turn, and will continue thus for several hundred yards, when she will suddenly fly off to some distance and after waiting awhile will return to the vicinity of the nest or young. Mr. Hanna (1921) writes: So far as known, the food of both old and young consists of beetles and flies while the birds remain on the highlands; when they move to the ponds and seashores they eat copepods, amphipods, etc. As soon as the young birds are well able to fly they resort to the tide pools and small ponds near the sea. Later the older birds join them and the flocks increase in size to several hundred in favorable places. This takes place in August and September in such localities as the Salt Lagoon of St. Paul Island. _Plumages._--The color pattern of the downy young Pribilof sandpiper is similar to that of the Aleutian, but the colors are different, much duller. The bright browns and buffs of the upper parts are replaced by "burnt umber," "snuff brown," "clay color," and "cinnamon buff," and the black markings are largely replaced by dark browns; the black patch in the center of the back is about as in the Aleutian. The under parts are less pure white, always suffused with pale buff on the throat and flanks and sometimes largely so on the breast also. Mr. Palmer's (1899) studies of the molts and plumages indicate that they are similar to those of the Aleutian sandpiper; he writes: