The behavior ot flocks was always noted, i.e., 

 feeding', traveling, searching, sitting, dispersing. 



The coordinates of each sighting were deter- 

 mined to the nearest minute on the basis of 

 interpolations of preceding and succeeding 

 ship's fixes or dead-reckoned positions. 



The time and the location of the ship were 

 recorded at sunrise and sunset, and the dis- 

 tance traveled during each day was measured 

 on the ship's charts. These data were essential 

 for calculation of relative density figures in 

 terms of birds per nautical mile and birds per 

 hour. 



BCF scientists gathered environmental data 

 concurrently with the observations of sea birds. 

 They made bathythermograph casts every 30 

 miles (55.6 km.) along the cruise track and took 

 water samples at various depths to 1,500 m. 

 every 90 miles (166.8 km.). Climatological data 

 were recorded at each bathythermograph cast. 

 A more thorough standard marine weather re- 

 port was made every 6 hours. Data included 

 surface sea temperature, surface salinity, sea 

 temperature at 10 m., wind speed, wind direc- 

 tion, barometric pressure, general weather 

 description, state of seas, swell direction and 



period, visibility, wet and dry bulb air temper- 

 ature, cloud type, and amount of cloud cover. 

 A 25-minute surface plankton haul with a 1-m. 

 net with 0.308-mm. terminal mesh was made 

 every evening beginning at 2000 hours. 



Storage and Analysis of Data 



An ADP (automatic data processing) system 

 was designed to store and analyze the data. 

 Included in the system were the data pertaining 

 to each sighting, the environmental data (both 

 oceanographic and atmospheric) taken every 

 30 miles along the cruise track, and the data on 

 the ship's positions and the duration of obser- 

 vations. The ADP system was described by 

 King, Watson, and Gould (1967). 



AVIFAUNA OF THE STUDY AREA 



The avifauna of the area will be discussed on 

 a general level with respect to the families of 

 birds represented and then more specifically, 

 first in terms of the numbers of species that 

 were recorded seasonally, then in terms of 

 distribution and abundance of the species in 



Table 3. — Birds banded on BCF Townsend Cromwell TWZOP cruises, March 196A to June 1965 



USFWS band 

 number 



Species 



Age 



Location 



Lat. N. 



Long. W. 



Date 



