-2- 
4 ^ 
V 
ITINERARY 
19 
February 1968 
1900 (+7 time) 
Depart 
San Diego, 
California 
23 
February 
1630 
Arrive 
Manzanillo, 
Colima, Mex 
25 
February 
1900 
Denart 
A 
II 
11 n 
30 
March 
0330 
Arrive 
II 
II II 
31 
March 
0900 
Depart 
II 
n II 
5 
April 
0800 
Arrive 
San Diego, 
California. 
The following report summarizes bird and marine mammal observations 
conducted aboard the R/V DAVID STARR JORDAN during EASTROPAC Monitor Cruise 
No. 76 conducted by the Bureau of Commercial Fisheries for the purpose of 
tuna research. Dioring the period 19 February through 5 April 1968, 269.2 
hours of diurnal observations were conducted over a distance of 1996 nau¬ 
tical miles and 4»589 sea birds were recorded. 
Excellent cooperation and assistance were received from both Dr. Thomas 
(Cruise Leader) and the scientific personnel and from Captain Forster and 
the ship's personnel. Their time and assistance given to launchirig and 
operation of the skiff are directly responsible for the successful bird 
collecting activities performed during this cruise. 
The cruise track extended from San Diego along coastal Baja California 
to Manzanillo, Colima^on the Mexican mainland where the ship refueled, and 
thence to a point offshore Acapulco, Gueirero^,where oceanographic studies 
were initiated. From Acapulco the cruise extended to 105° longitude and 
thence southward on this line to 20° S latitude. The original cruise plan, 
designed for a return north along 98° longitude, vras changed and a return 
north via 112° longitude was made. This latter cruise leg was originally 
designed for the R/V THOMAS VIASHIK3T0N, but serious illness to a crevmian 
aboard that ship required that a run be made to the Galapagos. The WASH¬ 
INGTON presumably conducted survey work along the 98° longitude line after 
departing the Galapagos. Except for a span between 20° S- 105°W to 10° S- 
112° W, oceanographic work was continuous aboard the JORDAN untilreturn 
to Manzanillo. 
METHODS 
Bird observations were primarily conducted only while the ship was 
underway between stations. Some observation time was spent while in the 
slciff during station time and these data are included in the total. Ob¬ 
servations vwere made from the flying bridge which afforded the best poss¬ 
ible view of the surrounding ocean. As Harrington pointed out in the Oct,- 
lej, 1967 cruise report, continuous binocular observation for one person 
i- impossible and birds were primarily spotted with the naked eye, with 
subsequent glassing for identification aid. 
I 
