At the head of the canyon, the screaming pursuit was crossed by another male with a great wingspread. But his more skillful opening played him false against the ferocity of the twice-balked Hook. His rising maneuver for position was cut short by Hook's wild, upward swoop, and at the below he raked desperately and tumbled off to the side. Dropping, Hook struck him again, struggled to clutch, but only raked and could not hold, and, diving, struck once more in passage, and then beat up, yelling triumph, and saw the crippled antagonist sideslip away and glide obliquely into the cover of brush. Beating hard and stationary in the wind above the bush that covered his competitor, Hook waited an instant, but when the bush was still, screamed again, and resought the female.