( 3 ) 
October 10 , 1963 - Sibley: llest co-unis (split by area in journal)’ - 4 l nests 
with one egg, 44 nest with 2 eggs, 3 nest with small young. 
) 
17 nestlings and 50 immatures banded. 
with one egg, 15 nest with 2 eggs, 8 nest with newly hatched young, 
1 nest with small young, 10 nest with large young. ( reduct¬ 
ion caused by activity of another group using vehicles)„ 
n About 50 ,o reduction in number of nesth 1 
Feb. 8-13 § 1964 —— Sibleys Estimated 1200 present. Hone nesting* 922 returns* 
3 recoveries* and 157 handed* 10 hlood samples taken* Boosts were 
unstable with considerable vhange from one night to the next* 
Feb. 12, 1964 ~—~ Sibleys n Then climbed lighthouse with Doug to wttch 
boobies come in to roost* One bird sitting on ground behind 
Itascatown. Another Masked Booby kept flying over it —■ first 
bird - sky pointing - and finally landed. First bird drove it 
off* This continued 5-6 times before we went down* Surprised to 
find that several of the roosts we plotted before dark were not 
there after dark. Doug counted 750 Masked Boobies coming in to 
the island in the evening — 25 apparetnly unbanded© 
Feb© 8* 1964 —~~ Clapps w Two booby clubs were seen on the HI part of the 
island. At about 4 s 45 the smaller more southerly club c on t a ire d 
* - | ^ 
61 bae&s; the larger club to the 
north 150-175 
birds 
