72 13 Nov. (cont.) I banded 9 Red-footed Boobies and 2 Gr. Frigates after dark. Number 7B bands are much to large for both species. Unless slightly flattened, the bands easily slip up over the "knee" and against the body of the bird, rather than staying on the tarsus. I don't think the band could possibly slip down over the toes. An interesting recovery - an Imm. Frigate 737-45489 was banded as an imm. 13 months ago - so the bird is at least 2 years old and still in imm. plumage. Five other recoveries were obtained. Many young Wedge-tails continue to wander about the island at night. Bonin-Island Petrel activity is not as pronounced tonight. These birds are most difficult to understand, as local populations fluctuate drastically from night to night - one night there appear to be close to 1,000 birds in the air, while the next evening very few - only a few 100, are to be seen. Many burrows have been dug, but no eggs are in evidence; and apparently won't be until Jan. 14 Nov. At 0900 I found a Black Gooney sitting on an egg - the first egg we have found this year. We checked later and staked out 5 study nests of t he Black-foot. Four of the bird had eggs. The fifth (Nest 2) had an egg in her oviduct which could be clearly felt by pushing in the abdominal region. All other pairs were sexed by checking the cloaca - those females just having laid an egg had distended and inflamed cloacae, and fluids were dripping from the opening. The males were not distended and whiter in color, and lacked the fluid. Paul and the skipper joined us in seal tagging this afternoon, and 5 new seals were tagged, 16 seals were found on the beach. On the north end of East Beach a Laysan and Black-foot were seen sitting and billing one another. After supper we made a booby census, and in the N.A.F. we found 111 ad. and 22 yng. Blue-faced Boobies; 38 ad. and 14 yng. Browns. There were 45 Ad. Blue-faced and 10 yng. in the South A. F. p only 6 ad. and 3 yng. Browns. ] 55 Ad. Blue-faced Boobies were marked for indivi- dual recognition, the breast and head being painted in a manner diagramed on overpage. A maximum of four