6 
Grey-backed Tern 
Two of this species were observed flying toward Koku Kami, where a 
3 rail breeding colony is established. 
Sooty Tern 
This species increased 9 % in numbers, from 1633 to 3117, As in 
past months concentrations of this species occurred near Oahu and in the 
southern portion of the grid area. On several occasions immature birds 
were observed in the corpany of adults , both in the north and south, atee 
the tosaatures of Moku Manu, off Oahu are now all flying, in addition to 
the immatures of the southern populations. 
Noddy Tern 
This species increased 31$ from l 6 g to 30ii, All of these were seen 
within $0 riles of Oahu or Maui, In feeding flocks to the north of Oahu 
they were in the proportion of one Noddy for every three Sooty Terns, 
Hawaiian Noddy Tern 
Seven of this species were seen to May, five within si^it of Maui 
and two within sight of Oahu# 
Fairy Tern 
Seven of this species were seen in the grid area to May* The species 
was absent from the area in April. Five were seen in the southern portion 
of the grid and two were seen just north of Oahu. 
