Ludwig, J.P. 1964 7 and several times I thought that I heard Red-tailed Tropicbirds calling. About 800 boobies were present on the roost. Also collected 1 centipede on the hill. February 19-21, 1964 Arrived back in Honolulu after February Starbrite. Purchased supplies for March and worked with Wirtz on supplies for Midway. Provost Marshall for Kanehoe MAS No. 258-73631. OD for K. MAS No. 258-72181. Gate sentry - check in at gate. February 21, 1964 1600 - arrived Kanehoe Marine Air Station to begin a bird census and activity study at Mohapu Point and Moku manu. The total number of Red-feets on Mohapu Point now approximates 1,000 birds (Max. count on Roost 773) and an estimated 865 are fully adult, about 40 in 24 months (subadult) plumage, and 70 in a mixed plumage of approximately 12 months old. Age class breakdown as follows: Based on 1000 birds. Juvenile-Immature Subdaull Adult with traces Adult 12 months at 2.5 percent 36.5 percent at 7 percent at 4 percent at 2.5 percent 86.5 percent 70 birds 40 birds 25 t rds 86.5 birds One dark phase adult was noted. Eggs were present in about 10-25 percent of the nests. Many nests have been built, but the bulk of eggs are yet to be laid. Active courtship and hostility between unpaired