TABLE 2. DIURNAL DENSITY OF SPECIES GROUPS, 
SOUTHERN GRID SURVEY #16 
16-22 April 1967. 
Species Group 
# Birds 
Birds/Sq .Mi. 
Est. Pop. 
for 54,000 Sq.Mi. 
$ Total 
Birds 
Shearwater 
.,42 
.016 
860 
1.0 . 
Pterodroma 
, 17 
.004 
220 
0.4 
Shearwater/Petrel 
63 
tr\ 
CVJ 
O 
9 
1400 
1.6 
Storm Petrel 
75 
CO 
0 
• 
3100 
1.9 
Procellariiformes 
138 
.104 
5600 
(3-4) 
• 
Tropicbird 
4 
.0008 
40 
0.1 
Booby 
55 
.021 
1100 
1.4 
Frigates 
120 
.020 
1100 
3-0 
Bird sp and 
Misc . Charadriiformes 
16 
.003 
160 
•3 
Tern 
3719 
V 
.96 
52,000 
92.1 
Totals 
4046 
1.10 
59,000 
103.4 
