Brattley, D.A. 1964 Sand Island, Johnston Is. Atoll (Notes) Mon. June 22 (cont.) 737-4Y621 737-Y4081 A-M main colony p.3 Sooty Tern — Tonight we took regurgitation samples of 500 young sooty terns by placing a plastic sheet beneath a wire pen in which all the birds were placed. Weight of all the regurgitated food was taken. Errors would be as such: Sand was introduced into sample by the young themselves, by wind, by a wedge-tail digging nearby, + by some sand that was packed around the outside edge of the plastic sheet to help keep it in place; many birds regurgitated before entering the pen + some regurgitated after being released. It may be noted that all the young birds did not regurgitate, however this is to be expected + would not enter as an error. The weight of the total regurgitation was 12 pounds, therefore the average per bird was 0.024 lbs, or 0.384 oz., or 10.896 grams. Tues June 23 Sand Is. - Wedge-tailed Shearwater. — Three (3) new nests were found on the islet today. The eggs were marked with today's date + 2 of the incubating birds were captured to read the band number. Three 3 birds were marked with red paint also. The data as follows :