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Species Accounts 
SHEARWATER-PETREL 
The Wedgetailed Shearwater* as usual, was the most abundant species 
in this group. Dark phase individuals increased as we proceeded southwest 
from Oahu, but were practically absent during the cruise from the grid to 
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Lisianski-Laysan and back to Oahu. Distribution of the species was fairly 
uniform throughout the cruise, except for a tremendous increase on the last 
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day (21* July) returning through the Leewards. 
Christmas Island Shearwaters were thinly distributed except for larger 
< • numbers near Lisianski and the larger Leewards. 
Few Newell's Shearwaters were seen during the cruise until the last 
day when 135 (more than 9h% of the total number observed) were encountered 
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northwest of Oahu. Last July very few were recorded although the ship 
| ? ^ returned through the Leewards. 
Bonin Island Petrels were much more abundant in comparable areas than 
j • last month, but the number of Cook f s Petrels was lower. The combined numbers 
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of both types were fairly comparable to July 1961*. Cook's Petrels exceeded 
Bonin Islands by approximately 5-1. 
Juan Fernandez Petrels (including white-necked) remained fairly low in 
number until the grid was approached, whereupon the numbers greatly increased. 
Practically none were observed after the grid area enroute to Lisianski and 
j thence to Oahu. A few individuals showed molt in the flight feathers. The 
complete absence of this species in the grid last July cannot be explained at 
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this time. Very large numbers were observed last month when the cruise 
extended southeastward near the Line Islands. 
