Wislocki, George S. 
1951?- 
Sand Island, Johnston Atoll 
23 
Noteai: In morning’7 Fairy Terns vere wheeling over island. In evening 1 Masked 
Booby (perhaps banded) and one Tattler were sighted. 
The Sooty population can now be estimated, safely, at 50,000 individuals. 
While banding this evening the v^hole population of Sooties roosting on the 
islarid departed, as the winds. 
!<• 
Janua ry 12--Noted: On this date the study areas were disturbed again, this time by 
tlie spraying of Milotheodin, a phosphate base pesticide mixed in a bulk emulsifying 
oil. The reason for this spraying was officially to keep the house flies in 
check; it is to be noted that there are scarcely any on the island. . Photos were 
taken of the entire spraying. The effect on the Golden Plover population v/iU be ob¬ 
served in tlie next few days. 
Banded: In the evening, 200 Booties and one recovery from last year*s banding. 
i2—S\irvey in morning: at 0630 estimated I900 Red-footed Boobies 
•Jr 
roosting on wires, 2Red-tailed Troplcbirds sighted flying over cMony. 
Collected: 4 Sooties for ectoparasites (vials 48,49^50,51) 
Comments; Riotographer under tlie command of Lt.Jacobs took 400 ft. of 35 Him color 
fiflm of nesting Frigateblrds. Wliile doing this an adult male Frigate swooped down 
•' t 
over an unattended nest and broke egg (this paarticular egg rotten). This is the 
third occasion on which this has been witnessed. 
Banded; 200 Sooties in evenigg. 
-41 
