♦ 
the grid, during which 351 birds of 11 species were observed. 
No nocturnal collecting was attempted during the cruise. Most 
sightings were of Sooty Terns recorded on the night of 20-21 
November southeast of Howland. Sightings were almost continuous 
from about 45 miles from Howland to the island; most birds were 
headed southeast and apparently coming from the island. Gray-backed 
Terns were recorded during nocturnal observations but not seen 
during the day. 
Density (birds/linear mile) was slightly higher than last 
* m- 
■m* - m “" 
month (6.31-4.86) and considerably higher than November 1965 when 
a density of only 1.15 was recorded. Sooty'■Terns were the domin¬ 
ant species during the present cruise and accounted for 60 % of 
total birds. Boobies and frigates were also abundant and repre¬ 
sented 13 and 7 % of total birds respectively. Sooty/Slender- 
• • 
billed Shearwaters, apparently terminating their fall migration, 
made up only 13 of total birds. 
