BLACK-FOOTED ALBATROSS ( Diomedea nigripes ). 
LAYSAK ALMTROSS (Diomedea imutabilis ) 
At-Sea Distribution and Abundance 
The following maps represent all At-Sea observations made by 
personnel of the Pacific Ocean Biological Survey Program from February, 
1963, through August, 1965* 
Each square represents one days observation from the first through 
the fifteenth of the month, while each circle represents one days 
observation from the sixteenth through the thirty-first of each month. 
Numbers refer to the actual number of birds observed during the 
day. 
Bed indicates the distribution o f ‘ Laysan Albatross. Green (1-9 birds) 
and Blue (10+ birds) represent the Black-footed A.lbatross. 
