Ituby 1964 Nov 22 at 5pm I also spent 15-20 min. sneaking through the smoot miserable crab holes, snags. bushes and mud holes on the island trying to shoot a re-roosting frigate. It turned out to be a bunch of coconuts with a seedpod handle sticking out each end (This was after dark). This episode didn't contribute anything good to my mood I had after the pigeon. Miserable day today. So I decided to go out and stand in it. It turned out to be more miserable than I expected. Plenty of good birds flying around but none come in close enough to shoot. Plenty of what we think are slender-filled shearwaters around. This evening a bird (I am positive about that) flew (I'm positive about this also) by. It was really weird. It flew with the same quick powerful wing beats as a sooty tern and reminded one very much the flight of a sooty tern. I was white below and dusky or grayish above (with no distinct border between) It flew very high and dipped down to near water level a couple of times. Its top height went to about 130 above the water and it averaged 90 feet. It was fairly streamlined. The light wasn't the best light so I cannot be exact about the shade of dusky on the top side.