October 11, 1964 ---Hackman Nest Description: Large colony runr 1 'ag fro® north to 
south along SE shore of the island broken down into 3 areas here: 
Area #1 (H. end) Relatively clear of vegetation with sandy soil and 
scattered coral rubble among clumps of Upturns, Fortulec^, Boe rhoev ia. 
and. Digitaria . /Almoat no attempt to conceal eggs. This arcs full of 
L grown chicks that hide in depressions near the roots of Po£ tula c a 
ot hd. * 3 .01* over clumps o'? t-lx@ two "bHiicli^rsRSc- » 
Ares #2 (central portion of colony) Contains eggs & |-grown chicks. 
A few egg 3 in shallow depressions near plant roots. Ground cover 
somewhat thicker that Area 3 with Trlbuins also present. Distances be- 
30CTY T3RN (3) 
/■/., 1 -v.i i 
( 6 ) 
tween nest centers 20”, 28, 28, 18, 22, IS, 39, 18, 13#, and 13" - 
all in relatively open area. Three nests around one clump of Portu- 
A ' X? ' 
lac a are diagramed as follows: f 
Ares #3 (S. end) The smallest area with heavy growth of Digitaria 
to height of 20 " forming a thick mat on the ground. Many incubating 
birds almost completely concealed beneath its tussocks and these al¬ 
most invariably had eggs in a slight depression. Other birds had eggs 
on top of a clump of bunchgrass. Same plants as Area #2, Dlgitaria 
predominating. Nests closer together than in the other two regions: 
13 ", 17 , 15 , 15 , 14, 10 , 18 , 12 , 12 , 12 , 14 , 17 , 17 , 15 . 
Remarks: A large collection of fledged birds, attended to by their 
parents, roostson the SR edge of the colony. In this area, the coral 
rubble forms a solid ground cover and vegetation, consisting of Trlbu - 
lus . Boe rhaavia. and Portulaea is sparce. There are 2 small island 
colonies W. of the main one both containing f-grown chicks on a met of 
Tribulus over thick coral rubble. Sparce growths cf Boer haayia» 
Portulaea with so.ae small, thick clumps of Dlgitaria . 
