7 
* Bulwer's Petrel (l) 
This species has been consistently recorded in very low numbers 
except for a large migration movement through the area during 
March 1966# 
Leach*s Storm Petrel (2) 
white-rumped storm petrels (18 + 8 nocturnal) 
Comparatively very low numbers of storm petrels were encountered 
in the grid during the present survey. Until the present cruise 
■ 
• * 
the distribution of white-rumped storm petrels in the grid seemed 
fairly predictable. To begin with, during the first grid survey 
in September 1965 no white-rumped storm petr'els were recorded. 
During the following month all three species known to frequent 
the grid (Wilson's, Harcourt's and Leach'.s) were represented. Ear- 
•- • 
• ♦ 
court f s and Wilson's in low numbers# Birds increased greatly dur¬ 
ing the November-December and January 1966 surveys; the vast maj- 
ority of birds referrable to Leach's. Numbers remained fairly uni¬ 
form through spring 1966 when an expected drop occurred as Leach's 
* 
moved back to the Aleutians with the advent of the breeding season# 
A small population of presumed pre-breeding birds remained through- 
out the summer and early fall of 1966# A rather early influx of 
post—breeding Leach*s (judging by 1965 movements) moved into the 
area during September 1966 and numbers remained at the same den- 
sity through Ootober# As expected* a small number of Wilson's 
were noted during both months# Instead of the expected increase 
* / 
4 
j 
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