Skua (Catharacta skua) 
One Skua was positively identified on 10 August within the 
grid and another questionably identified due to distance# This 
species has been recorded in the At-sea study previously but 
infrequently. 
No specimens collected. 
*. 
Red-tailed Tropicbird ( Phaethon rubricauda ) 
v * 
A-6 ' B-10 C-22 D-21 
This species has increased in areas C and D, and decreased 
t . : . 
* 
in areas A and B. 
One specimen collected# 
"White-tailed Tropicbird ( Phaethon lepturus ) 
A -? ’ B-U C-2 D-U 
This species represents a decrease in area A, increase in the 
grid and occurrence consistent with last month in areas C and D. 
No specimens collected. 
Blue-faced Booby ( Sula dactylstra. ) 
A-l B-l C-0 D-15 
l 
Occurrence of this species remains consistent with last months 
findings in all areas except D* The additional area covered and 
proximity to land accounts for the increase in area D# 
No specimens collected# 
