n W-5 July 
O = 16-31 July 
= 0 birds 
® -1-10 birds 
O =11-25 11 
O =*26-50 " 
O = 51-100 « 
* 101 - 500 " 
WHITE-RUMPED STORM PETRELS 
( Oceanodroma leucorhoa + f. castro ) 
At-Sea Distribution and Abundance 
JULY 
