Ludwig, James P. 1964 The first section of the trail with its many switch-backs is barren and rough going. The first silver swords appeared about 8,500 feet. Vegetation appeared well established in areas below 8,000 feet and ferns made up one of the first pockets we located. The later portion of the trail after reaching the crater floor was easily covered. About 1995 we heard the first Dark rumps above us. By 2030 their activities of arriving and calling seemed to reach a peak and thereafter (until securing at 2200) we noted few calls except from flying birds. In an attempt to locate this species we first examined the slopes of Maile across the crater floor without success. We concluded that birds heard there were simply flying towards the cliffs of Kapalaloa. We then attempted a climb of the cliffs behind the cabin. We climbed about 3/5 of the way (800 feet ?) to the rim before realizing that the birds were located in the walls of the cliff another 500 to 600 feet up. So we climbed down frustrated, but with the idea that relatively few birds are here (est. 150± seventy-five pairs) and to get them, one would have to hike the rim to this area and climb down from there. The call of this petrel is rather Bonin Petrel like with the protracted growl, but a high pitched squeak (squeal) at the end. It is given most often in flight. Once on the ground, the birds were silent. This suggests that this colony has mostly eggs now. When young are present in petrel colonies, one can hear them begging for food. If the birds are just establishing territories and are mating, there are many vociferous fights and bedlam is the rule. Silence after landing suggests that one bird is relieving the other during incubation, for this process (if similar to albatross as it probably is) likely involves