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..HITE-BUMPED STOBM PETRELS (Oceanodroma leucorhoa + 0. castro) 
~~~~ Wr - * T * ““ ~‘ r t ~» -~-r - 1 
At-Sea Distribution and Abundance. 
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The following maps represent all At-Sea observations made by 
personnel of the Pacific Ocean Biological Survey Program from February, 
1963, through August, 1965. 
Color code: 
Green = refers to numbers of birds (l-9) 
Blue = refers to numbers of birds (10+) 
Red = refers to group of ca. 100 found around a dead whale. 
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