Common kingfisher diving with folding wing

　The advance direction is that connecting the eyes, the tip of bill and the fish, such as an attack plane adjusts the sight to a target. The kingfisher bends down the wing and consists the center of pressure with the center of gravity so as to steer quickly. The bent down primaries are effective to keep the pose stably together with steerage. The lift will be kept constant by folding the wing as accelerating. It will be also better as the rushing pose.
(Prod. Oct. 1995, full-scale, No.1)