3 The following species were considered rare or accidental in terms of small populations or extra limital occurrence: Dark-rumped Petrels 4 Bonin Island Petrels 3 Cookilaria sp. 2 Long-tailed Jaeger 1 Arctic Terns 6 Red ? Phalaropes 2 House Sparrow 1 Species Account Black-footed Albatross Diomede nigripes Date April 11 12 13 14 15 16 17 18 19 20 21 22 23 Max. No. in one Observation 5 10 8 15 50 6 7 8 4 8 5 2 5 2 PM Sea water Temperature 24.4 22.8 22.2 20.0 20.0 19.8 18.3 16.2 15.1 12.9 11.7 10.0 09.4 Observed every day of the cruise. Numbers built to a peak on 15 April and then dropped to a low but fairly constant level across the Pacific. The peak on 15 April may be partially explained in two ways. First, one half of the birds observed on this date were following the U.S.S. Paul Revere with which the Granville Hall rendezvoused. During 15 April the Granville Hall's course was southwesterly. It might be assumed that albatrosses were more attracted to a ship which was headed toward their breeding islands than away from them during the breeding season. Prior to 15 April maximum numbers were observed during the afternoon, while after 15 April the highest number for the day was seen in the morning. Laysan Albatross Diomede immutabilis April 11 12 13 14 15 16 17 18 19 20 21 22 23 Max. No. at one observation 0 2 1 2 5 1 3 1 0 0 1 0 0