New Zealand Shearwater 
One bird possibly of this species was observed closely on 1J April. 
The presence of this species in the area is still suspected but has not 
been confirmed. 
Sooty Shearwater 
This species continued its spring migration this month, with 507 
birds recorded compared with 382 in March. The first week of April, when 
che peak 01 the spring 19^4 migration took place in this area, was not 
included in this month’s period of observation. It may well have been the 
migration peak this spring as well as last. Several birds were seen taking 
part in feeding flocks, but most were flying swiftly and directionally to 
the northwest. 
Newell’s Shearwater 
Most of the do birds seen in April were spread over the southeast and 
central portions of the area. No concentration was noted. Only 12 were 
seen in April 1964 . 
Christmas Island Shearwater 
Four individuals were seen, two between Kauai and Oahu on 11 April. 
Pale-footed Shearwater 
Two birds were recorded in April, both heading north. This species 
wa^> unrecorded last spring but its presence in the area was suspected. 
Mottled Petrel 
j_en individuals were observed in April, all heading north in a manner 
similar to Sooty Shearwater. This species presence in the central Pacific 
was not suspected last year. 
t 
