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. 
