59 
Brown Booby ( Sula leucogaster ) 
Current Status : Probably resident, breeding annually in small numbers. 
Prior Records : The species was first noted on Lisianski by Isenbeck in 
1828 (Kittlitz, op. cit . ). Several were collected by Palmer in late June 
I 89 I (Rothschild, op . cit . ), including two young. He found this species 
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the scarcest booby in the Leewards, Ho eggs were found on Lisianski. 
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Bailey (1956) saw about a dozen on the island in March 1913* Munter (op. 
cit. ) found the species nesting near the frigatebirds and scattered along 
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the shores with the Blue-faced Booby, but not nearly as numerous, in 
March 1915* They nested on the ground in a slight depression with a few 
sticks and one or two feathers. He found eggs or young in the nests, and 
several of the young were well developed. Two lime white eggs were found 
in the nests, but as with the Blue-faced Booby he noted that only one young 
was raised. He estimated that 75 to 100 birds were present on the island. , 
Wetmore (unpub. notes, 1923) found about 40 pairs on the island in May 1923* 
He found most nests in the grass patch at the northern end of the island, 
but some were on the bare ground at the eastern side. Hatchlings and young 
nestlings were found, but most nests contained eggs. An immature was 
collected. Richardson (pers. comm. ) saw only two birds in March 1954. In 
March 1961 several nests without eggs were found in the interior (Woodside 
and Kramer, op. cit .). 
y v * 
Population: The resident population of the island is probably between 25 and 
1 ■ ■ ii -w ii. ————■ . . 
50 aaults. About 30 adults were present* in March 1963* an & a immatures 
were noted. Only 17 birds were present in March 1964, In August °of that 
year about 50 adults utilized the island. A few were seen along the rocky 
portion of the eastern shore in the day time, but most were found in the 
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