1 I L-i5 July 
O = 16-31 July 
O ** O birds 
® —1—10 birds 
O =11-25 * 
O =26-50 » 
O =51-ICO " 
# * 101 - 500 ” 
WHITE-HUMPED 3T0HM PETRELS 
(Oceanodroma leucorhoa. * 0. c&gtro ) 
At-Sea Distribution and Abundance 
JULY 
