5 
Red-ta iled Troplcbird 
Tills species increased in number 257^ from 7 in April to 25> in May. 
There »s a minor concentration of those birds in the northwestern comer 
of tiie grid area, where on two occasions courtship flight was observed. 
Fnito- tailed Tropicbird 
Numbers of this species increased $0C£ from h in April to 2h in May. 
Twelve of these were seen along the coast of Maui where the species is 
loiown to breed. 
Blue-faced Booty 
This species increased 12&'? from lj in April to 9 in May. All were 
immature or sub-adult birds. All were seen in the southwest earner of 
the grid area. 
Brown Booby 
Two of this species were seal within sight of the coast of Oahu where 
it breeds. 
Red-footed Booby 
This species increased 5 2? from ?1 in April to 108 in Fay. All but 
one of these were seen within 60 miles of Oahu where they breed* One 
bird, an immature, res seen in the northwest corner of the grid area. 
Great Frigatebird 
dJjgP ■ 
Heven of this species were seen in the grid area, 2 at the southern 
end and the remaining 9 near Oahu, where they roost. 
