26 
40 winks niter lunch and after the UF arrived with the mail went , 
ip the Radar tower again until 1910 hours, For'the pass t.^ee 
days the weather has been identical, and w»<tnao « 
sfStTLr-ss-M s^/onctiW 
for t particular" kind of day at a particular txme ox year. On e 
the biggest problems in talcing the data is standar^axn^ 
the method°of S sampling, but I think _ that Bill and I have 
worked this out by tag*, c J meantime anything 
thing aloft at that time, and n ^ nto should elimin- 
:S 6 SfbSs o°f°tre observer in taking readings when those birds 
which seem to him most active are up and flyxn 0 . 
10 - 26-03 ^ ^ WQel< 0 f early risings vie slept in and xt 
fel b damn -ood. Spent the late morning and early afternoon out 
in Petrel-Shearwater Study just 
h!iw*d*nse tlkfests be within this area, I had originally felt 
^fi^r of the ark 
I Seated and marked 124 burrows, 79 of whicn h-a ^xe.xy .uio.,n 
sand at their mouths indicating activity inside at the 
moment, and 28 surface ( Probably from ^os^ng Bonxn 
scrapes. From this sample, it would seem that within this are. 
alone there must be 500 and 700 active burrows, inxs ^rea is 
not, however, typical because I choose this as xne place wxtn 
i the highest concentration of burrows on toe isL*na. Stw ^ ^ 
! 3 is more typical of the whole island in terms of bird conce 
I trations. Nonetheless, there could be upwards of 10,000 p xrs 
: of Wedgetailed Shearwaters, 750 pairs Christmas I si * 
i Shearwaters, and perhaps 4,000 pairs of Bonin * 6 S * - 
! island. Tf someone has suggested such numbers bexore today I 
j would have suggested a straight jacket for him. But, now *h j 
1 seem reasonable and very possible estimates. 
Saw two Black-footed albatross flying over the couth-Jest 
1 end of the island at 1420, and from the surface ox a xish - ag¬ 
itated by an adult S Brown Booby I recovered a ( larval . ) 
r —w npv,, a tode 41 so, I checked the skeleton of one iawULe- 
- okparai yesterday, and foundmuchto 
tion 'that the rats had gotten to 
part of the skull, and most of the sternum . vau ■. 
I hate to dry the skolotons in doors, out iUNOa. 
is the only tenable solution until we get some pi o 
once again. 
