Bratley, D.A. 1964 Sand Island, Johnston Is. Atoll (Notes) Fri. June 12 Sand Is. — Found 3 Emma. Noddy Tern eggs piped. 2 were laid May 8, therefore taking 35 days to be piped. 3rd egg laid on May 10, therefore 33 days to piping. Dr. Ely & Binin Amerman left today for Honolulu. I flew down here on June 7 with Dr. Ely. I was Binin's replacement. The past 5 days Dr. Ely, Binin, Diet Meril, +4 managed to band 10,400 Spot Terns — 7500 immatures + 2900 adults. Mon. June 15 Johnston Is. — 9 returns on Red-Tailed Tropicbirds today, 5 of these were on eggs + 1 had a small young chick. Evidently the birds or eggs are renesters, but earlier data must be seen to confirm this. All these returns were banded by Ken Amerman +4 during my last stay except maybe one, 4 most of those birds did eggs or chicks at the time. The green crosses (egg or young) or green lines (non renesters) painted on the breast were for the most part now too smudged or worn to tell exactly what they had been. All the birds now are marked with blue paint using the same system. 5 birds banded less than 90 days were also checked as well as 8 new birds banded. The data on returns + returns less than 90 days follows: