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16 Feb. (cont) area. We handled about 100-110 birds, 
mainly Laysans, in addition we banded some Sonins. 
Got a return on one Sonin with an sol egg in the oviduct - 
753-33861. Jim Priest on Midway is finding now many • 
'Bonin's with eggs. In 3A2 handled 11 Sonins - sad 
jnews - only 4 had been previously banded. Is there no 
lend to the number of birds using the area. 
17 Feb. Today I checkdd the Blue-faced Boobby colony 
| every hour* There were few birds early in the day, 
but the number throughout the day was high - there are 
now 9 nests, one of which (4) has been abandoned* 
! The number of males vs. 2 incubating did not seem to 
change appreciably during the day and night* There were 
3 ? and 5? at 0716, 42 and 4 <? at 1200 and 1700, 
and 5cT and 3 2 from 1900 to 2300. Slight increase in the 
males on eggs at night. The locations and individuals 
i present at 2300 were almost identical to those of 1900, 
almost no change at all - 7 new individuals had come 
into the colony. 
Alan put metal numbers on the 
last of the blank beach stakes, so that is all done* 
At 1600 on Bob and Alan counted the ration of marked to 
unmarked Laysans in the Central Roost area* They xoung 
86 marked birds and 154 unmarked, or j6 per ceno marked. 
We have marked a total of *3^ x birds in the centraj. 
i roost, so this gives us a minimum of T^sro* birds using 
that area. There is a tremendous turnover rate, and 
although perhaps 3^0— 400fi birds will use une area at a 
given time, a great many more, over time, come in. 
We weighed and measured the seal pup again, it has 
i&cEEikx grown slightly, with new measurements as xollows. 
Wt* 40; TL 45"; T 2 3/4"; FF 9"; KF 8 l/2" long x 12*“ 
wide (stretched) ; G 27"'* There were no teeth, ana the . 
umbilicus has sloughed off* The young crawls well and 
bleats in response to the mother, who follows us where - 
! ever we take the young. 
18 Feb. Activity study all day. It should be caxled 
an inactivity study again, as there was almost nothing 
happening, and the latter l/2 of the day it rained and 
rained, ix .21" M by 1800, and much more during the 
night. At 0700 there were 19 RFB and 5 S!rig« the 
roost. Things deteriorated all day, most of the time 
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