Bonin Island Petrel 
Ihia bird is poorly represented in the grid area in the spring, only 
two individuals having been seen in April and four in March. The two in 
April were seen at tine southern end of the grid. 
Dark-rumped Petrel 
Seventeen individuals of this species were seen in April, almost 
twice as many as in March. Four of these were seen near the main 
Hawaiian Islands, while the remaining thirteen were seen at the southern 
end of the grid area. 
Yfiite-necked Petrel 
Only three birds of this species were seen in April compared with 
nine seen in March, All three were seen at the southern end of the area. 
Hare mart's Storm Petrel 
Numbers of this species increased 1159» from 59 in March to 129 in 
April. This species was quite evenly distributed throughout the entire 
grid area. Considering that the numbers of storm petrels seen this month 
is roughly the same as the mashers of Wedgetail Shearwaters exclusive of 
flocks, it seems strange that no nesting sites have been located in the 
Hawaiian Islands. 
Several birds of this species were attracted to an oil slick of 
vegetable oil less than 1$ minutes from the time the slick was formed. 
Presumably fish oil would attract them even better. 
