3 
Bonin Island Petrel (29) 
This represents a large influx over last month when none were seen 
t 
in the grid area. Comparison with last July is difficult because these 
were not distinguised from Cook* * s Petrel. However, the combined total of 
i 
these small Pterodroma during this month was over double that of last year. 
Cook's Petrel (99) 
This represents a three fold increase over last month when 3k were seen. 
Dark-rumped Petrel (l) 
A comparable paucity of this species was noted in July I 96 I 4 . when 2 
individuals were seen. None were observed last June. 
Kermadec Petrel (3) 
This represents a slight decrease from last month when U were observed. 
Only one individual was seen during July 196U. 
Red-tailed Tropicbird (21) 
This number is somewhat greater than was observed during July 196U and 
v 
over double the number encountered within the grid last month. Most individuals 
f 
were observed in the northern half of the grid. 
White-tailed Tropicbird (3) 
The low number is comparable with those encountered last June and July 
196U. All three individuals were in the northern part of the grid. 
Sooty Tern (U90) 
These made up over U5 percent of the total number of birds observed 
* 
throughout the grid. • There was a considerable increase over the number 
observed last June and nearly twice as many as was observed during July 196U* 
In accordance with the distribution of most species in the grid, the majority 
