Fig. 3. Castrated male originally hen-feathered (292), nearly black in color, as shown by the individual feathers of [plate 7], figure 2. After castration the bird has become red above, with black iridescent tail-coverts, and deeper yellow (or red) below.
Fig. 4. Castrated F₁ male, originally like figure 1. Note especially the change in color of the whole upper surface that has become red, like that of the jungle-fowl. The tail-coverts have grown long and are now iridescent black. The breast has changed least, but is a richer yellow. The comb and wattles and ear lobes are shrunken, as in all capons.
Fig. 1. A castrated Sebright male. The operation was performed on a juvenile bird; the drawing was made a year later. The bird is typical as to the change in color that takes place in the Sebright. He was darker red than the bird shown in [plate 1], figure 4. The red was more mahogany than the picture shows. The original feathers were like those in [plate 6], fig. 2 (there erroneously referred to as those of light-colored Sebright).
Fig. 2. An F₂ hen-feathered very dark male. The condition of his plumage at the time of the operation is shown in this figure. The change that took place after castration is shown in the next figure.
Fig. 3. The change that took place in the bird drawn in figure 2 is shown here. The whole upper surface has become red, except the tail-coverts, which are iridescent black. Note also the change in color on the wing-bow. For the details of the feathers see [plate 9], figures 1, 1a.
Fig. 4. A castrated F₂ bird that had been hen-feathered and had changed over to cock-feathering, as shown here. The color and the details of the original hen-feathering are shown in [plate 9], figures 2 and 2a.
Fig. 1. One of the original Black-Breasted Game males used in the breeding experiments. Compare with colored drawing, [plate 1], figure 1.