Bui:;or 1 s Petrel con*t. 
islands. Twenty-eight weieseen within a period of onc-half hour during 
the evening of 13 July, all heading toward Lanai, less tear; ten nil 03 
distant. 
Harcourt T s 3torn Petrol 
Onl-- two of this species were seen in the grid area, both toward the 
.icrn end. This species has steadily decreased in numbers in the grid 
s out: 
area from a peak of 129 birds in April. 
Bed-tailed Tropicbird 
Numbers of this species increased U?1 iron 1$ in June to 22 in July. 
This species was fairly randomly disoriented inrougnoat air cuu tne 
eastern corner of the arid area. Two very young birds were seen, corn 
y-v. 
nea 
vily verniculated on the back and lacking central retraces altogether. 
This so- 
Unite-tailed Tropicbird 
;cies increased in numbers 3>7A Trom seven m June oo eleven 
in July. All of these were seen in the northern half of the grid arc 
on 
Brown Booby 
Two of this species were seen on 1 August heading toward Koku S-ina, 
onlv fifteen miles distant. 
“ t> 
Rod-footed Booby 
Seventeen of this species were observed in July. All ouu one ot tn j a a 
were seen in the vicinity of Oahu. The other, an immature, ‘is s^cn hi- 
miles northeast of Oahu, further from land than any Aed-fcoted Booby seen 
thus far in the grid area. 
