6 . 
[Dills probably represents a significant increase in the numbers of this 
species diming this time of year. Two specimens were collected. 
Sooty Storm Petrel ( Oceanodxoma marhhami ) 
This species is extremely difficult to distinguish from Bulver T s 
Petrel and the estimate of density is therefore very 'unreliable. Pour 
individuals were recorded, all during April, ho specimens were collected. 
Red tailed Tropicbird ( Phaethon rubricauda ) 
A total of 8 birds were recorded in April and 27 in May. During 
both months the species was almost equally divided between the grid area 
and other areas. This might mean a slight increase in the population level 
during May. Mo specimens were collected. 
bhite tailed Tropicbird (Phaethon le pturus ) 
Five birds in April (2 within the grid) and 7 May (2 within the 
grid) were recorded. This represents a small, but perhaps significant 
increase for this species during Hay. Two specimens were collected. 
Blue faced Booby ( Sul a dactylatra ) 
The 14 individuals in April and the 9 in May represent a continuous 
reduction in numbers of this species since March. One bird, banded on 
French Frigate Shoals was collected within the grid on April 14. Two 
specimens were collected. 
Red footed Booby (Sula sola ) 
Of the 24 birds observed in April and 22 in May only one in April was 
within the grid area. This is a continuation of the decline in numbers of 
this ssecies noted in [March. TTo specimens were collected. 
