ft 
Aaermnn, Kennet h 
56 
190 
December 5 — Continued work on albatross recoveries, covering the west 
side of the runway below the barracks and the entire east side. With 
few exceptions unpainted birds in the southern and eastern portions of 
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the island are now unbanded ones. This makes the record keeping somewhat 
easier. Totals for the day: nine black- foots, four of which were Incubati ng , 
and 153 Laysans, 110 on eggft. 
Roger Clapp arrived on the afternoon flight . We toured the beach 
. from th§ dock to the north end of the runway before supper. 
December G — Roger and I worked all day on vegetation plots, mapping 
No.s 1, 2 , 4, and l/5 of No. 3 . Measurements are very subjective and 
variable, probably non-repea table . I-luch difficulty in deciding what to 
measure (which plants and which parts of plants), especially in areas 
with much young grass. 
At Roger's suggestion we went through the north antenna field 
recording all Masked Booby bands. This is a good idea for several reasons — 
any new individuals in the population can be recorded j it gives an accurate 
picture of numbers present and of sex composition; the birds are marked 
for further study. Males were painted with a stripe across the head. 
females with a spot, and unloaowns with a central stripe. This procedure 
should ordbably be repeated every three months. The results of the 
i 
and 4'70Q2j, A-P); 101 recoveries (13 juvenile, 40 c f t 37 2, 11 U)* Roger 
hand, which led to the high number of unidentifiable birds. 
