Species 
Percent 
Number 
Sooty Tern 
67.7 
182 
Wedge-tailed Shearwater 
12.3 
33 
White Torn 
8.9 
24 
Common Noddy 
3.7 
10 
Leach(?) Storm Petrel 
2.2 
6 
White-tailed Tropicbird 
1.8 
5 
Phoenix/Tahiti Petrel 
0.7 
2 
Frigatebird sp. 
0.7 
2 
Small Pterodroma 
0.4 
1 
Golden Plover 
0.4 
1 
Miscellaneous 
0.7 
2 
100 269 
Most of the area vas very sparsely populated; the linear density for 
the first three of the four days (l8l miles of observation) was a scant 
O .38 birds/mile. . Seventy-five percent of the total birds was logged on 
the last day prior to entering the Southern Grid area. All the Sooty 
Terns were recorded on the last day, most of them shortly before sunset 
(ca . 4° S.). I believe these birds were continuous with the large num¬ 
bers recorded in the southern section of the Grid (ca. 2° S.) on the fol¬ 
lowing day (l6 April). Wedge-tails, Common Noddies, and White Terns were 
commonest just north of Samoa. White Terns were again regular in associa¬ 
tion with the Sooty Terns in the north Section. The middle section was a 
general bird vacuum with a linear density of only .162 birds/mile (over 
l42 miles of observation). This middle section includes the waters around 
Swains Island which failed to contribute any significant number of birds. 
✓ 
Phoenix Islands to Fiji Islands and return to Southern Grid _ 
2-6, l4-l5 February 
(Cruise track crosses date line twice. Consecutive days are 2, 3, 
5, 6 February (7, 8; 12, 13 February discussed under interisland, Fiji), 
14, 15 E, 15 W February). 
Area covered : About 10 miles west of Hull Island to about 
20 miles southeast of the Isles de Horne; 
60 miles northwest of the Isles de Horne to 
the Southern Grid. In total some 1500 miles 
essentially a. round trip from the phoenix Islands 
to the Fiji Islands and back. 
# miles of obs.: 797 
Species 
Percent 
Numbe 
Sooty Tern 
71.8 
1430 
Wedge-tailed Shearwater 
18.0 
357 
White Tern 
^.3 
85 
Blue-gray Noddy 
1.7 
34 
White-tailed Tropicbird 
0.9 
18 
( 89 . 8 *) 
