DRAFT 
Mar.-Gil.-At Sea 
RED-TAILED TROPICBIRD 
Twice as many of this species were seen in October as in November. 
They were concentrated from 173°W to the Marshall Islands, increasing in 
density as the islands were neared. In November they^hatTmoved east and 
north. Two individuals were seen on November 21 and 22 with adult plumage 
but yellow bills. These may have been subadult birds. Only one immature- 
plumage bird was found, on November 25. This and one adult were collected 
in November. 
WHITE-TAILED TROPICBIRD 
As usual, this species did not occur far from land. All but two were 
seen within 600 miles of Oahu and the remaining two occurred within 600 miles 
of the northern Marshalls. 
One specimen collected in November. 
BLUE-FACED BOOBY 
Distribution pattern was nearly identical with that of the above species. 
Nearly equal numbers were seen both months in the vicinity of Oahu though the 
oirds ranged farther out in November. None seen below 12°. 
Two immatures collected in November. 
RED-FOOTED BOOBY 
This species was seen only within 60 miles of Oahu with the exception 
of one bird on October 4 and in the vicinity of Taongi Atoll. 
BROWN BOOBY 
Much less numerous than the Red-footed Booby but with the same pattern 
of remaining close to land. Four seen each month. 
