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TABLET 6. ■ Diurnal abundance of Flocks’in the Southern Grid, 18-21 Nov, 1966 
Date 
No. Flocks 
No. Birds % Shearwater- % Ter n % Booby % Frigate 1 
Petrel ——— 
18 November 
20.6 
19 
6.3 
8 
540 
9.5 
TOTALS' 
15 
71 
278 
2077 
1.5 
11.9 
68.4 
12.21 
10.5 
7.0 
7.-2 
\ 
• t 
Average flock size = 29 
Includes Sooty and Slender-billed Shearwater flocks 
