The young birds were almost without down, the adult plumage being outlined very shortly after hatching. In a bird of only four or five days the dull orange or yellowish color of the rump feathers shows plainly. When these break through their sheaths, the color is a dull rose; becoming redder as the feathers increase in length, but not attaining the brilliant scarlet of the parent birds until the succeeding moult. When full grown, these birds measure about ten inches in length and are glossy black in color, save only for the brilliant scarlet rump. The bill is a conspicuous greenish white, while the feet are black. The eyes of the nestling are dark hazel in color, while in the old birds the iris is of a most beautiful greenish blue. The voice of the very young birds is a shrill incessant _peep! peep!_ when they are gaping for food, but the half-fledged youngsters utter solitary harsher notes under the same conditions. The five fully fledged birds had learned what fear was and instead of feeding, crouched down at the bottom of the artificial nest which Mr. Crandall made for them. But hunger overcame fear and before night all had taken food. We kept an Indian busy gathering a berry or fruit which looked, tasted and smelled much like a miniature tomato. The leaves of this low plant are large, deeply incised and studded above and below with numerous thorns. The plant is from three to six feet in height, is abundant in the clearing, and forms the favorite vegetable food of the Cassiques. In addition to this, the young birds had a few mealworms and ants’ eggs from our small store, and all the soft insects which our Indian could capture. After two full days of grasshopper catching, the pride of the noble red-man began to feel itself injured, and additional inducements in the way of tobacco were needed to sustain his interest in his orthopterous pursuits. On the following day the oldest of the young Cassiques flew feebly to a low perch and nothing could induce him to return to his fellows again. He uttered isolated call-notes, which however, at the approach of food, merged at once into the baby scream. We had carried the young Cassiques a third of a mile to the veranda of the bungalow, where they were put out of sight and sound of their parents; yet early next morning four Cassiques had discovered their offspring and were flying back and forth close to the house carrying food in their beaks. In an hour no fewer than twenty Cassiques had collected, and on placing the young out in a low tree, the parents came at once and fed them. One bird which we watched carefully brought masses of caterpillars which it inserted within the wide mouth of the young. Although the young birds were mixed up, five or six of the same size being placed together in one artificial nest, yet there was no question about recognition on the part of the old birds. At least there was no reckless undirected feeding; certain young were fed by certain adults.