Great Frigatebird (Frigata minor): 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 actual number hf birds counted for each day. 
Blue line encloses total area of occurrence. Red indicates 
exceptionally high numbers. 
