5 
Newell’s Shearwater Puffinus pufflnus newelli 
Two were observed on 11 April within 50 miles of Oahu 
Dark-rumped Petrel Pterodroma phaeopygia 
Four were observed during the first five days of the cruise. The 
bird of 15 April was at 28°15'N l48°45’W, a distance of 600 miles from its 
nearest breeding colony on Maui. This record probably constitutes the 
northernmost sighting of this species. 
Bonin Island Petrel Pterodroma hypoleuca 
•* 
Three were observed on 15 April at a distance of 900 miles from their 
* 
nearest breeding colony. 
Cookilaria sp. 1 
Small, light grey backed petrels of the cookilaria group were observed 
on 18 and 20 April. The fairly narrow, but distinct, dark underwing edges 
indicated that the birds probably were not those with which the author has 
some familiarity, P. h. hypoleuca, P. h. migripennia or P. leucoptera 
t 
masafuerae . 
Bulwer’s Petrel Bulweria bulweril 
Eleven were seen within 50 miles of Oahu. 
Leach’s Storm Petrel Oceanodroma leucorhoa 
i 
April_11 12 13 14 15 16 17 18 19 20 21 22 23 
oi 15 2331005203 
Observed most days of the cruise. Those observed between 12 and 17 April 
appeared to be migrating north, while those seen between 20 and 23 April were 
flying non-directionally or were sitting. The former group may be the 
Aleutian population, the latter the west coast population. 
