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C.'R. Long 
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The Cassytha forms a dense mat over Tribulus and Messerschmidtia in 
parts Ox Cook Island, The nest density of the Hawaiian noddy in the dead or 
eying j-icsscrschmidoia is very high, Thesejbirds must contribute to the denu¬ 
dation of those shrubs and small trees by lasing the leaves and inflorescences 
cxs nesting material. He observed about ten masked boobies and one grey—backed 
tern while enroute to Cook Island, On the stony coral area on the north side 
Ox Cook island one finds large circular stands <jf Tribulus and Boerhaavia - * 
i/iiich have become established at the base ^ ffclesserschmidtia shrubs. There are 
t,.o brackish potnoles on the southwest end, Scaevola forms a ring around 
these areas. The northwest of the island is drier with the ring of Messerschmid 
- Scaevola broken up into a few clumps scattered along the''shore. 
ti 
June 20, 1964 - He banded sooty terns from 3 am. until 6:15 am. '( 48 O) and 
Hawaiian noddy nestlings (100). 
Two permanent markers were placed on Cook Island: 
1. On the southwest end in Heliotro pium — Portulaca — Lepturus stand 
due southeast of the tower on the west point; and ' 
2 . On the northeast end in Heliotropium — Portulaca stand sse of the 
tower on the ne. end. Both of these permanent markers are at least forty 
incnes aoove the soil surxace and provide excellent photographic coverage 
of the major features of the island. 
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