SMITHSONIAN GRID I Survey No. 23 Cts 
PRELIMINARY REPORT AT-SEA Survey 
July 1965 
Smithsonian Grid Only 
This report is based on the collections and observations made within 
the Smithsonian Grid during early July 1965. A total of 6 days (6-11 July) 
were completed covering a total of 708 linear miles and 76.U hours of 
diurnal observations. 
The Smithsonian team consisted of Dayle Husted (Biologist in charge), 
Richard Crossin, Brian Harrington and Jeff Tordoff. Excellent cooperation 
was received from the officers and crew of the U.S.N.S. SHEARWATER. 
Certain species such as the Blue-faced and Brown Boobies, Bulwer's 
Petrels and Fairy Terns which were recorded in small numbers during the 
July 196U cruise were not observed during the present trip. Sooty Terns 
and shearwater-petrel group were found in much greater numbers and were 
largely responsible for the total number of birds being almost double that 
t- • 
of July 196U. The total of IO 8 I 4 birds observed during the present month 
‘ is very close to double that observed last month when 5U9 were recorded. 
The most outstanding variance from the previous July trip was the total 
of 188 Juan Fernandez Petrels (including white-necked variety) observed 
this year as compared to none observed last year. 
Weather conditions during the present grid cruise were on the whole 
favorable, but the sea was usually a bit too rough to allow the use of the 
small skiff for collecting. A fair representation (31) of the more abundant 
I 
species was collected from the SHEARWATER. ' 
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