Ludwig, JP 27 1964 One bird leading another in a tight twisting climb with staccato pigeon- like flight, climbing as rapidly as possible (without aerodynamic stalling) to a height of 300-500 feet. Phase 2 - A circling or straight glide at high altitude, birds in formation. Phase 3 - A rapid descent to low over ground or water in a glide punctuated by rapid changes in flight direction. End of display: This entire process takes 25- 45 seconds, and always involves 2 birds. They fly in formation with the follower duplicating very precisely the movements of the leader. Often after Phase 3 the tails of both birds are wagged from side to side. I could not discern whether or not there were vocalizations involved. We arranged to get to Mohu Manu on Monday. March 20, 1964 Today at 1700 we made the 600 yard swim to Popoia Island in Kanehoe Bay. This swim is long and when going out one is facing a small current, and only people who are able to swim should go on such a trip. One of our party could not and the rest of us hauled him out on a raft. Popoia is a coral island, filled with depressions and holes: Extreme caution must be used here as it would be very easy to break legs. Some of the falls are more than five feet deep. At first on arriving we toured the whole island banding some 52 birds; later after dark we banded another 155 Wedgetails, bringing our banding total to 207 wedgetailed Shearwaters, 7 of which were dark-phased. No other petrels or shearwaters were seen, but several flocks of shorebirds were noted: Maximum counts on the shorebirds were 17 Ruddy Turnstones, 9