DRAFT 
Mar.-Gil.-At Sea 
In contrast, only 26 Sooty Shearwaters were identified in November, 
randomly distributed. They were replaced, to some extent, by Slender-billed 
Shearwaters, 4 of which were collected of 156 identified. Slender-bills are 
known to be later migrants than Sooties and can be distinguished by their low, 
straight, horizontal flight with little or no arcing in addition to the 
uniformly colored, though often n shiny”, underwing and tendency to occur 
singly, in pairs or small groups (less than 10). Only one bird of this specie 
was identified in October, though others may have been present. Many birds 
apparently of this speciesaaccording to flight had whitish wing linings but 
they were not nearly so bright as those of Sooties. 
NEW ZEALAND SHEARWATER 
One bird was tentatively identified as this species on November 22 and 
a possible second one was seen October 2. 
COOK 1 S PETREL 
The distribution of this species resembled that of the Wedgetailed Shear- 
water accept that none were seen within 60 miles of Oahu in October and only 
3 there in November. Slightly more were recorded in November (90) than 
October (72) but in at more random distribution than in October, when most 
birds were concentrated between l6o°W and 175°W« A slight concentration 
south of Johnston Island suggests that this is an area in which these birds 
linger in their southward movement at this time, perhaps to join in feeding 
flocks with migrating Wedgetails. Nearly all were flying singly, however. 
Two specimens collected. 
WHITE-NECKED PETREL 
Only 26 were seen in October in contrast to 152 in November. Birds in 
October were concentrated between l6o°W and 175°W but were quite random in 
