SPECIES ACCOUNTS 
Wedge-tailed Shearwater (1+1 nocturnal) 
Throughout the previous year, Wedge-tailed Shearwaters have consistently 
been one of the dominant Procellarids in the grid avifauna and such low numbers 
as were recorded during the present survey have not been previously noted. 
Their absence from the grid at this time cannot be explained since they were 
abundant last September and small numbers of dark-phase southern island birds 
o 
were noted north of the grid^ca. 5 N on 20 August 1966* Both birds recorded 
in the grid were dark phase. 
Sooty/Slenderbilled Shearwater ( 1 ) 
A single bird tentatively identified as a Slender-billed Shearwater was noted 
on 18 August* If last years migration was typical, huge numbers of southward 
migrating birds of both species can be expected in the grid next month. 
Juan Fernandez Petrel (2) 
A single bird identified to this race and another Pterodroma externa 
unidentified to race were recorded in the grid* Only a few were noted last 
month* This species was recorded in low numbers during the previous year usually 
during migration to and from the southern hemisphere breeding grounds* 
Phoenix Island/Tahitian Petrel (3) 
Both species are known to occur irregularly on the grid area, but Phoenix 
Island Petrels are probably the more common* Specimens have now been collected 
on both Howland and Baker and the species appears to be an uncommon, but regular 
visitor to the grid area* 
