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Aft'S A B. Total Birds. SIC 9. SIC JJ. SIC 13 SIC 14 
9059 2801 3556 546<T 
This section of the cruise Is not exactly comparable with 
previous cruises because Jarvis Island in the Line Islands was visited 
after Samoa instead of a direct return from Samoa to the Southern 
Grid through the Phoenix Islands. Two peak bird days were on 7 and 
10 August upon approach to and departure from Jarvis Island. On 
these two days nearly 64^ of total birds recorded during the 15 days of 
at sea observations in this area were sighted. Approximately 89 ^ 
of the birds seen on these two peak days were Sooty Terns, undoubtedly 
from the large breeding colony on Jarvis Island. Bird numbers 
were unusually low through the Phoenix Islands and north of Samoa. 
AREA C . Total Birds. SIC 9 SIC 11 SIC 15 SIC 14 
6009 2483 10049 683 
Shearwater-Petrels were dominant throughout Area C, accounting 
for over 63 % of total birds. Sooty Terns made up 32^ of total birds. 
Roughly the same percentages of both groups were recorded during the 
first portion of the cruise over this track from 5-11 July 1966. 
Total bird numbers during August were only 38^ of that recorded earlier 
in July. The usual heavy concentrations of feeding flocks were not 
encountered during the return, trip. Moderate numbers of Sooty Terns 
and dark-phase Wedge-tailed Shearwaters were noted on 20 August one 
day north of the Southern Grid (3 Q 30" to 5°N). The area through 
8°-10°N where large numbers of dark-phase Wedgetailed Shearwaters 
were encountered in July was practically devoid of birds on the return 
trip in August. It is possible, however, to pass completely through 
a high density area during the night. The usual dominant species 
(Sooty Terns and Wedge-tailed Shearwaters) were relatively low in 
number, but a great variety of Petrels was encountered. 
