2 
This storm may have had some effect on several species including the 
migrating Slender-billed Shearwaters and Juan Fernandez Petrels, perhaps 
blocking or diverting some of the former species and shifting some of the 
latter somewhat southward. It may also account for records of three 
accidental species at sea, a Pintail Duck, Short-eared Owl and Japanese 
White-eyes, through this is less likely. 
Nocturnal observations were held mainly to see if there were any major 
differences in species or numbers after dark and during the day. This 
proved not to be the case and observations were generally not run through¬ 
out the night. Small numbers of Sooty Terns were seen or heard, including 
several immatures. As in daylight, this species was confined to the eastern 
half of the grid. The complete lack of terns on the night of November 18-19, 
within 20 miles of Johnston Atoll, is good evidence that this species has 
for all practical purposes completely left the immediate vicinity of the 
island. 
In general, the occurrence of most species groups and of total birds 
resembles the results obtained in 1963 rather than 196U. This is true for 
the Shearwater-Petrel group, mainly due to the migrating shearwaters, and 
for Terns and Tropicbirds. Boobies were less numerous this month this year; 
frigates and storm petrels were more numerous than in previous years. 
The exceptionally smooth seas much of this month probably allowed some 
birds, notably the migrating shearwaters and the storm petrel, to be observed 
at greater distances than usual. This would mean that the estimated popu¬ 
lations are perhaps higher than they should be. On the other hand, fairly 
