H. D. GOODALE. 



the full male plumage would be assumed. Instead, a different 

 type appeared. The feathers were shaped like those of the hen, 

 except the tail coverts which in shape resembled those of an 

 English Campine male. That is, they were rather longer than 

 those of the hen, curved, and with rounded ends. The dorsal 

 feathers were dull black with golden shafts, sometimes with a 

 few minute brown spots on the margins. Ventrally the feathers 

 were black. 



With the moult of 1915, a further change took place in that 

 the breast feathers were replaced with salmon-colored feathers, 

 while there was some increase in amount of brown stippling 

 dorsally, so that this bird, too, was very much like a female. 

 She was opened on each side in October, 1915. The same 

 set of organs was found as described for the preceding instances. 

 This bird, like 3840, also changed the character of its plumage 

 after the operation. The new breast feathers were black, while 

 the saddle feathers were good male though not as long and 

 pointed as is usually the case. 



A fourth instance has a history somewhat different from the 

 one just preceding, although it was a litter sister and castrated 

 at the same time. The castration, however, proved to be in- 

 complete in that regeneration of the ovary took place. A minute 

 bit of the ovary must have been left and when it became suffi- 

 ciently large the new feathers that developed under its influence 

 were female. Nearly a year after the first operation, a second 

 was made and an attempt made to remove the regenerated ovary. 

 Apparently it was successful for the bird soon after began again 

 to assume male characters. The spurs became long but the 

 comb has always remained hen-like, though erect. The present 

 plumage is a mixture of male and female characters. The breast 

 feathers are almost black but contain a little salmon in small 

 patches. The dorsal feathers are not much longer, if any, than 

 those of the normal female but they are triangular at the apex 

 and have a margin of golden bristles. The centers, however, are 

 female colored. An examination of the right side in October, 

 1915, showed a body similar to those described but rather larger. 

 The left side seen from the right appeared to be empty but when 

 an attempt was made to open the bird on the left side, un- 



