Slender-billed Shearwater (5) 
Only five individuals were recorded within the grid, marking the end 
of this fall T s migration. 
Juan Fernandez Petrel (33 + 6 P. externa sp. ) 
Numbers were comparable to last year*s, though no change over the 
4 
November period was noted this year. Numbers again decreased Westward, 
indicating that the remaining birds may be preparing to leave for southern 
breeding areas, or that the grid area lies at the western edge of the non¬ 
breeding distribution. 
Black-winged Petrel (2 + 6 P. hypoleuca sp. ) 
A slight further decrease was noted this month. Both individuals were 
seen on December 3 in the easternmost portion of the grid sampled. 
Leach 1 s Storm Petrel (2) 
Only two were observed this period, in contrast to 12 in November and 
12 last December. Probably some were not observed due to the rough seas 
and high winds. 
White-tailed Tropicbird (l) 
One adult was seen on December 3> essentially no change in status 
over November or last December. 
Blue-faced Booby (6) 
This species increased somewhat over November to a level comparable 
with previous years. Of the six individuals, three were lmmatures, the 
rest not distinguished. 
