Note 100 — PROGRESSION IN OR THROUGH THE AIR. (continued 3)

“If the albatross desires to turn to the right he bends his head and tail slightly upwards, at the same time raising his left side and wing, and lowering the right in proportion to the sharpness of the curve he wishes to make, the wings being kept quite rigid the whole time. To such an extent does he do this, that in sweeping round, his wings are often pointed in a direction nearly perpendicular to the sea; and this position of the wings, more or less inclined to the horizon, is seen always and only when the bird is turning.”—“On some of the Birds inhabiting the Southern Ocean.” Ibis, 2d series, vol. i. 1865, p. 227.