During the period 31 January - 23 March 1967 the USCG Rockaway was 
engaged in oceanographic research in the Eastern Pacific Ocean as part 
of the EASTROPAC project. The ship departed Rodman Naval Base in the 
Panama Canal Zone heading west to 5°N-88°W, then north to La Union, El 
Salvador. The ship then proceeded south to 20°S - 92°W, west to 20°S- 
98°W and then north to Acapulco. From Acapulco the ship headed west to 
12"N - 105°W, then east to 12°N - 95°W, before heading south to 5°N and 
then back to Panama. In the course of the trip environmental data were 
collected at approximately 20 mile intervals and weather data were re¬ 
corded continuously. As part of this program, bird and mammal observa¬ 
tions were made by me for a total of 43 days. This report summarizes 
those observations. 
A total of 348-9 diurnal hours of observation was recorded while 
the ship travelled 2,840 miles. No nocturnal observations were made. 
A total of 8, 180 birds of 28 species was seen. 
TABLES 1-7 summarize all of the observations made and FIGURE 1 
shows the cruise track. Species distribution maps have been combined 
with those derived from Bulmer T s data from the JORDAN cruise (l February- 
22 March 1967) and may be found in that cruise report. 
METHODS 
Watches were maintained for an average of 8.11 hours per day between 
sunrise and sunset. All observations were made from the flying bridge, 
which provided the best view of the surrounding ocean. 
DISCUSSION 
For the purpose of analysis, the survey area has been divided into 
five sections as follows: A) Panama to 12°N to 5°N; B) 5°N to 5°S along 
92°W, near Galapagos); C) 5°S to 20°S (along 92°W and 98°W); D) 5°S to 5°N 
