the dark phase birds further south in May moving into the southern part 
of the area in greater numbers in June with the corresponding greater 
penetration north. 
Newell's Shearwater 
Numbers of this species decreased 53 percent from May (49) to June ( 23 ). 
A similar decrease occurred last year. The largest concentration (10) was 
in the southwest corner instead of the southeast corner where it was located 
in May. Lesser numbers were seen north and south of Oahu and in the south¬ 
east corner. 
Kermadec Petrel 
Eight individuals of this species were seen this month, four times 
as many as May. They were seen mostly in the western part of the area. 
Three were seen in a feeding flock. None were seen last June. 
Phoenix Island or Tahiti Petrel 
Four individuals were seen in the southern part of the area - two in 
the southeast corner and two in the southwest corner. Separation of these 
two species at sea is almost impossible. 
Dark-rumped Petrel 
Only six birds of this species were seen in June compared to sixteen 
in May. The concentration north of the high Hawaiian Islands was not 
present this month. One bird was seen as far south as 13 N. Exact data 
is lacking for June 1964, but it appears that fewer birds were seen this 
June than last June. 
Juan Fernandez Petrel 
Six hundred and eighty-seven birds were seen this month plus 12 with 
white^ napes. Only 263 were seen in May. This large increase occurred last 
year between June (l 86 ) and July ( 609 ). Two large concentration areas were 
