oo 9 
2 11 2 
13 1 
-jj- OBS in each section 
The cause of the slight increase over the last survey is not clear. 
Most birds appeared to be heading south and the distribution within the 
Grid suggests the southwesterly diagonal migration path that was noted 
in September and early October surveys. Non-Grid observations north of 
the Grid area suggest that more birds are present in the offshore waters 
now, in early November, than were present shortly (mid-late Oct.) after 
the main stream of birds passed south. One bird was tentatively identi¬ 
fied as a Slender-bill (section W). As mentioned under Fulmar^ additional 
Sooty Shearwater sightings are doubtless included under the category 
T, Shear/Pet". 
Pink-footed Shearwater # OBS = 1 
Puffinus creatopus 
As noted with previous Pink-foot observations on the Grid, a single 
bird was observed, in conjunction with high counts of Sooty Shearwaters, 
in section M T". 
T, Shearwater/Petrel n # OBS = 18 
"Shear/Pet tT is a loose category which encompasses all unidentified or 
incompletely identified Procellariids. About a dozen of these Shear/Pets 
were either Sooty Shearwaters or Fulmars. Three birds in the southwest 
areas were possibly Pterodroma sp. 
Leach Storm Petrel # OBS = kl 6 
Oceanodroma leucorhoa 
0.0 
• 031 
• 752 
.203 
•553 
.432 
• 310 
1-231 
•579 
Birds/linear mile 
Three population elements appear to be contributing to the overall 
Grid picture of storm petrels. 
1. A secondary wave of storm petrels from the northern breeding 
areas is evidently finishing up a southerly pass through the Grid. This 
is probably a different population than was transient in early October. 
After a lull in mid-October this present survey recorded high numbers of 
birds passing south in the central Grid sections. I would suspect that 
this secondary peak represents the southern populations of the nominate 
northern race ( 0 . 1 . leucorhoa ) whereas the previous peak represents the 
northernmost populations. Few south bound birds were found in the north¬ 
ern third (in part covered at night) so I suspect the tail-end of a 
movement was witnessed. 
2. In the southern areas a static, i.e., non-migratory population is 
evidently present and some collected specimens are in prebreeding condition* 
