TABLE 3. 
SUMMARY OF NOCTURNAL GRID OBSERVATIONS, FEBRUARY, 1967 
DATE 
# OF MILES 
// OF HOURS 
# OF BIRDS 
# OF SOOTY TERNS 
j} OF SPECIES 
13-19 
132 
12.3 
l . 
8 
3 
5 
19-20 
90 
8.2 
5 
4 • 
1 
20-21 
131 
7.6 
298 
2 77 
2 
21-22 
103 
12.1 
- 
mm 
- 
22-23 
124 
12.2 
1 
1 
23 
33 
3.8 
- 
- 
TOTAL 
613 
56.2 
312 
284 
5 
