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birds 
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Lesser Frigatebird ( Fregata a riel ) 
Current Sbatus: Second most Abundant nesting species # Maximum POBSP count 
15*000 Judy in July 1963 and 1964* Minimum POBSP count; 100 in February 1964 and 1965* 
* 
Prior Records: One specimen was collected on May 15* 1939 by L.P. Schultz. 
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Population: The number of Lesser Lrigatebirds on Lnderbury have varied widely 
yfr-p 
during the seven visits to that island made by POBSP. The population has varied 
from 15*000 in July 1963 and 1964 to less than 100 adults in February 
1964 and 1965* There were at least 10,000 breeding birds present in July of 
1963 and 1964. 
Table 
ijk **** 
presents the population estimates from each trip ands shows 
■ —e- 
the decline in numbers from the summer peak 
-Table 
Lesser Frigatebird, populations on Enderbury Island 
i • 
February 
May 
July 
1963 
15,000 
November 
3,000 
■5©e 100 
100 
15,000 
6,000 
10,000 
Annual Cycle: Table __ presents the -estimates-e#- nest counts taken on the 
seven trips to Enderbury .and Exact counts were taken in 1963 tabt - n > ' k ’ i e c x ua x ^ t 
1964 but the other are estimates based on sample counts of the colony 
Table . 
Lesser Frigatebird nest counts m Lnderbury, IslandJ 
February 
July 
November 
0-1300 
20-1800 
1963 — 3674-1256 
. 
1964 3-C 1000-4000 
. 
1965 0-0 2000-2000 -- 
. 
) The first figure is the number of nests with eggs and the second the 
number of young 
* 
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