Gymnoptys californianus April 9, 1946 Hopper Canyon, Calif. (18?) pothole about 200yds. S. of a one ledge below North Creek Falls. A second adult landed 20' away, then took off & alighted in the same hole. became perched & flopped within 4 or 5 ft. of the borders. at 11:21 one adult took off. The remaining adult stood in entrance & twice thrust the neck out to prop at a narrow bowing place. at 11:23 the second took off and alighted in a 6' long pothole about 100 ft. further down the canyon in same big ledge and at joint to a water trickle on the rock face. The first adult was already in this hole. The heads were close together much of the time, sometimes close to the floor. Perhaps they pecked at one another's head. at 11:45 me displayed for about 1 minute. The display waddled from side to side as it walked back & forth towards away from the other unresponsive adult. Head down as usual & ruff down. 11:51 both took off, within about 30 seconds & soared over North Point. They put feet down when 100' over the point & circled down to near the same hole. at 11:58 they landed in a similar hole 100'yds. further S. on the cliff at same level - this hole was well whitewashed and about 20 ft. from a green ls. This hole was about 1/4 mile N. of #12 nest SIN next lower ledge. Here again the adults stood a long time, heads close