- 2 - this concentration is not considered a flock, but an area of concentration. Flocking of other species was noted rarely. Inactive groups of storm petrels or phalaropes were occasionally seen sitting on the water. Feeding flocks were noted only twice. The first (on 27 February) was composed of eight Black-legged Kittiwakes and a Pomarine Jaeger feeding over a natural slick about ten by fifty feet long. On the same day another flock composed of Gulls and Albatross which had been following the ship formed briefly over a group of feeding fish. A small slick formed at the same time. This flock dispersed in less than five minutes. Collecting during this survey was reduced from the last primarily because the outboard motor broke down. Fourteen specimens were shot from which eight blood sera samples were obtained. (see table 1.) For purposes of discussion the grid has been divided from both north to south (see table 2) and from east to west (see table 3). These divisions are shown on map 2. Bathythermographs were taken on 39 localities within the grid on this cruise. Grid Species Accounts Black-footed Albatross (Diomedea nigripes) 34 Highest densities were recorded in the central and southern sections of the grid with fairly even distribution from east to west. The distribution more closely approximates that of January as opposed to early February, probably due to differences in areas sampled during daylight hours. Two birds with bands were seen. Fulmar (Fulmaris glacialis) 83 Density was again highest in the northeast section of the grid with over sixty percent of the sightings being recorded in an area near point "D". The