Late on the afternoon of May 16, 1921, we were on the south side of Gray's Harbor, Washington, on a marsh meadow bordered by the tide flats. At this hour the tide was nearly at its full, and the many shore birds that had been feeding on the flats were forced to retreat before the incoming waters and in consequence were driven close to the edge of the meadow. Not far from where we lay concealed a very large number of these had assembled on a somewhat elevated stretch of ground near the meadows border, among them being several hundred of the knots, these in two or three compact flocks all the individuals of which were facing the wind. The knots were resting quietly although there was much movement going on among the shore birds. We could easily by the aid of our glasses, see many turnstones, a few greater yellow-legs, these keeping by themselves, and in the shallow water at the edge of the flats a very large number of red-backed sandpipers and long-billed dowitchers, flanked by an immense flock of the smaller sandpipers. At this time the sun was low in the west and its almost horizontal rays fell full on the breasts of the knots, for in facing the wind they happened to be turned toward the sun, whose light intensified the pale cinnamon of their breasts, this making a beautiful sight. Without any warning nearly all of this mass of birds suddenly took wing. As they rose, the knots keeping by themselves separated into three compact flocks and rising high in the air then flew directly towards the north giving their calls as they did so, and this appears to be a habit of the species when taking wing. Again, the knot does not appear to fly aimlessly about as do many other of the shore birds, and is generally to be seen in flocks, the individuals of which are closely associated, although at times scattering birds will be observed; and in flight by the seeming course a flock will pursue, we always receive an impression that it has some objective point in view. Dr. W. E. Ekblaw has sent me some very full notes on the habits of the knot in northwestern Greenland in which he says: