Species Accounts New Zealand Shearwater This bird occurred only on August 5 about 250 miles southwest of Guadalupe Island. Manx Shearwater The listing of observations under this name means that all birds observed were not identified to race. These birds occurred south of Guadalupe and north of the Equator. Tahiti, Phoenix, and Tahiti/Phoenix Petrel Several of these very similar petrels were specifically identified only when they were observed at very close range. Herald Petrel Only one bird identified as Herald Petrel was seen near 7°N at 119°W. Dark-rumped Petrel This Galapagos Island bird was in the area of high Shearwater/ Petrel populations north of the Equator at both 119°W and 112°W. P. externa Both races, Juan Fernandez Petrel and White-necked Petrel, were observed on this trip. The White-necked Petrels were separated by the heavier black border on the leading edge of the wing. This species was the predominant one for the survey but occurring almost exclusively in high concentrations at 5-7°N along both 119°W and 112°W. Cook Petrel These birds were observed well off the Baja California coast. Bonin Petrel Five of these Hawaiian breeding birds were very distinctive when compared with the other small pterodroma. Their very dark collars and prominent slash in the wing made them unmistakable. Storm Petrel Birds not positively identified with white rumps were called White-rumped Storm Petrels. Birds with white rumps and almost all of the other characteristics of Leach Storm Petrel but not positively identified were called Leach-type Storm Petrels. Those called Storm Petrel sp. were distant enough that no rump color or other characters could be observed.