Gadfly Petrels (Pterodroma spp.) 
The general inexperience of the observers on this trie r ade 
accurate identification of the seecies belonging to this wrouo 
■*- Q O • L. 
very difficult. One Tfoite-necked Petrel (Pterodrorna externa) and 
several Bonin island Petrels (pterodroma hyooleuca) were identifi 
ea . 
in general; however; the group as a whole appeared in increased numbers 
from April and hay. Of the 101 individuals recorded during the trio 
63 were within the grid area. 
On 1 $ June one Bonin Island. Petrel flew aboard ship at 0330 
hours. Two Bonin Island Petrels were collected. 
Bulwer 1 s Petrel ( Bulweria bulwerii ) 
Of the II 4.2 birds observed most were found- on the return tri 
u 
down the Leeward Chain and near Oahu. None were found within the 
grid which completes the downward trend in numbers from the high 
found in April. This may be the result of the commencement of breeding 
activities on the islands. Two specimens were collected. 
« 
Hare our t*s Storm Petrel ( Qceanodroma castro ) 
Only three individuals were recorded representing a greatly 
reduced at sea population over Nay. None were recorded within the 
crv>‘ir] fir* PS . 
No specimens were collected. 
Red-tailed Tropicbird ( Fhaethon ru.bricau.da ) 
Twenty seven birds were recorded of which 8 were within the 
grid area ; and ? were found between Oahu and Johnston Island 
Three specimens were collected. 
