Estimated 20 roosting in dead trees. 4 "banded 
February 8 - 13 , 1964f -Sibley: Estimated 20 roosting in dead trees. 4 "banded 
4 returns. (One of these birds "northern" with pure white hack (KBC) 
July 22*25» 19^4 — Sibley summary • n $6 adults and 21 nestlings handed with 
8 returns* 11 nests with 1 @gg t 8 nests with small youngs 
21 nests with large young* Estimated 150 adults* All nests 
and birds in grove of dead Cordia in center of island* n 
July 22, 1964 
Oct. 9-13,' 1964 —SIBUST summary; "8 nests with 1 egg, C nests with small young, 15 
/ . . . . _ _ _ _ 
/ nests with large young. 19 adults, 4 immatures, and 15 nestlings bande<?| 
## 24 returns. 7Q birds estimated." 
October 11, 1964 ——-Hackman Nest Description: The nesting colony is located in a flat 
area of the central depression that is characterised by an unusually 
lush growth of Tribulus cist 6ides , puncture-weed. The Tribulus forms 
a solid mat 5 to 12 inches deep and overgrows the low branches and 
stumps of kou ( Cordia ) trees. The area, approximately 200 X 300®, is 
bordered by Digitaria 
Neet 8itcs &re OQ dead Cordia trees, gene- 
a ally anywhere there is s flat surface, on forks, where branches co 
322D-?COTED BOOBY (3) 
verge, or v;here vegetation ( Tribulus ) has overgrown and formed dense 
clumps on the Cordia . Nest construction is exclusively of Tribulus 
steins. Guano builds up on nests and apparently cements them together 
New nests are shallow and loosely constructed. 
Height 
Depth 
Diameter 
60" 
14" 
19X28 
13 
2 
14X14 
34 
10 
15X24 
12 
5 
15X17 
36 
8 
16X17 
20 
5 
18X19 
46 
6 
16X20 
15 
7 
16X17 
19 
4 
16X17 
19 
7 
22X23 
