h 
January 196$ - ^CF cruise 
Miite-necked Petrel 
Eight birds were observed in January, of which $ were almost 
certainly this type, while the other 3 may have been this type or the 
very similar Juan Fernandez Petrel# distinction between the two birds 
is not always possible# 
Juan Fernandez Petrel 
Forty—three individuals were recorded in January, a continuing 
decrease from the 1$6 seen in December# No marked distribution pattern 
was noted# Considering that the breeding season for this bird began two 
months ago it is surprising to find such a sizeable population still in 
the area# Evidently it is never wholly absent from the area# As the 
plumage of this bird wears, it more closely resembles the White-necked 
Petrel in that the dark edges of the white nape feathers wear off# 
Bulwer T s Petrel ? 
One bird, thought to be this species, was seen imperfectly on 
2lx January. This species is not expected to appear in numbers in the 
area until March# 
Leach*s Petrel 
Eighty-one birds of this species and an additional 7 presumed to 
be this species, although imperfectly observed, were recorded in 
January, a substantial increase over the $3 seen in December# Numbers 
were distributed fairly uniformly over the whole area except for one 
concentration around 18°N - 1$7°W T where 37 birds were seen on 6 January, 
including a flock of Hi# One bird flew aboard on the night of 6 January 
i 
It was collected. 
