doubled in weight as they weighed 9, 11½ and 12 oz. on June 24. During the month following they traveled several hundred miles on board the launch but a rough sea seemed just to improve their appetites instead of making them sea sick. They were not particular as to their food as long as it was fresh meat, but they preferred bird bodies to mice. On June 30 they weighed 12-18 and 20 ounces. They had tremendous appetites and could almost eat their own weight of meat every day. At this time the largest one began to develop a few dark pin feathers and one day he discovered what his feet were made for. On July 6 they weighed 20-23 and 25 ounces. The largest one began to flop his wings and hop along down the hill and once he gave vent to a genuine "duckhawk" cry. From this on they did not increase much in weight but went mostly to feathers. A few days previous to this