Juan Fernandez Petrel All 263 birds plus 14 with white napes, previously called White- necked Petrels, were found in the southeastern portion of the area. The limit of penetration is indicated by a line from 19° N on the eastern leg to the southwestern corner. This distribution is generally identical to that of May 1964, although fewer birds (165) were seen last year. One bird was collected. Most individuals were undergoing molt. It is felt that distinction between subspecies of this species is not safe on the basis of whiteness of nape alone. Bonin Island Petrel One bird was seen at close range on 30 May, north of the high Hawaiian Islands. Cook's Petrel Practically all of the 147 birds seen in May were in the southern end of the area. Although fewer (69) were seen in May 1964, the distribution pattern was identical. Most birds were flying swiftly toward the northwest. Bulwer's Petrel The majority of the 97 birds seen in May were within 100 miles of the high Hawaiian Islands. The remainder were scattered fairly randomly throughout the area. Fewer birds were seen in the southwest corner than in April. A large flight of some 72 individuals seen just south of Lauai in May 1964 accounts for the difference in numbers between this May and May 1964 (178).