Ludwig, J. P . 
i in w m> » ii»i» »i « 
19o5 
15 
These roosts are, I believe, analogous to the "clubs" of Ifeskad Boobies, 
Herring gulls and other birds. These "clubs" are not strict however, 
as on several occasions I watched birds alight on different clubs than 
their home club. However, when on a strange club the birds acted as 
though apprehensive and usually left after a short time - the threat of 
any bird resident on the club was enough to send the new arrival away. 
The Sooty Terns on Moku Ma mi again exhibited the phenomena of 
building up of their numbers over the island as evening approached. 
We estimated about 5000 breeding pairs on this island. There may 
actually be considerably more than this. We left the head approxi¬ 
mately 1850 after collecting one Booby with a broken wing. 
February 24, 19 54 
Hated cloud of 5000-10000 Sooty Terns off Manana Island. Hot yet 
nesting 
February 26, 1964 
After calling DC, King, Hoeraan, Whitman, and I caught the 1500 
plane for Kauai and left to band Boobies In the Kiluaea Lighthouse 
Colony, Made reservations to get to Menu tomorrow evening and back to 
Oahu Sunday evening. 
Arrived at Kilauea Lighthouse Colony where re remained for about 
75 minutes. I estimated about I70 adult pairs here. Most birds seem 
to be singles sitting on eggs or nest. Ho ted 5 dark phase birds, 7 
immtures and subadults with an estimated 2<$0 adults present. Wind was 
