-5- 
Eight of the 11 birds recorded were seen on November 6, the same day 
a large number of migrating Slender-bills were moving through. A late 
bird was seen on 1 December, north of Samoa. 
Dark-rumped Petrel Total -1 
( Pterodroma phaeopygia ) 
A single bird was seen ca. 300 miles south of the main Hawaiian chain. 
Black-winged Petrel 
A= 
-109 
(Pterodroma hypoleuca) 
B= 
-12h 
C= 
-59 
D- 
-23 
Abundance and distribution of this species has remained essentially the 
same as in October. 
White-winged Petrel 
A= 
-1 
(Pterodroma leucoptera) 
3= 
-23 
C= 
-6 
D- 
-0 
Again this species caused some confusion in identification. In the 
extreme west part of the westward extension collecting revealed that many 
birds we had been recording as Black-wings were in fact P. leucoptera . 
There was a definite increase of White-wings to the west and at 178°E. the 
2 small Pterodroma were present at about equal numbers. Under wing and 
belly color of P. leucoptera is highly variable and of little use in field 
identification. The dark head of the White-wing seems to be the oest 
character for separating it from its pale-headed con-gener. 
Bulwer 1 s Petrel A= -2 
(Bulweria bulwerii) B- -17 
C* -18 
D= -8 
Collecting from the skiff has pointed out the fact that Bulwer*s Petrel 
is consistently not seen from bow observations. One day of skiff work resulted 
in 7 Bulwer’s collected, while none were recorded from the bow post. 
Leach’s Storm Petrel A= -2(+l6) 
(Oceanodroma leucorhoa) B* -l6(+29) 
C= -6(+27) 
D* -l(+8) 
Birds recorded as White-rumped storm Petrel or Storm Petrel species (numbers 
in parentheses) are surely mostly of this species. Heaviest concentrations 
were found in the south-western and western areas of the survey area. 
Wilson’s Storm Petrel Total -2 
(Oceanites oceanicus ) 
Two birds of this species were seen together on December 1. 
