R. Staples-Brownb 143 



Chequered Blues. 



Type V. Blue chequer, no white feathers. (B.C. no wh.) 



The head and neck were of a slightly darker shade of blue than 

 that found in C. livia, as was also the breast. Here a little dappling 

 with a still darker shade was sometimes seen. The wing coverts and 

 back were very definitely chequered with black. In some of the more 

 lightly chequered feathers the outer webs only showed the black colour, 

 but in the darker specimens both webs were similarly coloured. In 

 nearly every case the extreme tip of the feather was of the ordinary 

 blue colour. The black wing bars were very much wider than in 

 C. livia, and appeared to be part of the general chequering. The flights 

 and tail feathers were as in the Rock Dove. The black tail bar was 

 present. Abdomen and under parts as in the Rock Dove. 



Type VI. Blue chequer, with some white feathers. (B.C. some wh.) 



Under this head are classed all Blue chequers in which any white 

 feathers were seen. Chequered varieties of both Types II and IV were 

 met with, but no example of a chequered bird having the true Rock 

 Dove pattern as regards white occurred. 



Non-chequered Silvers. 



Type VII. Silver, no white feathers. (Silver, no wh.) 



This type has already been described above. The rump was con- 

 sidered to be a very light silver in all cases. 



Type VIII. Silver, with some white feathers. (Silver, some wh.) 

 Only three birds of this type were raised (v. Exps. 60 and 63). The 

 amount and distribution of the white on these specimens were similar 

 to that described under Type IV. As far as could be seen no typical 

 white-rumped pattern occurred, but as the rump of the silvers was in 

 all cases so extremely light, this type might very easily have been 

 overlooked if it had occurred. The same remark applies to the occurrence 

 of silvers with a few white feathers on the rump, vent and thighs, and 

 these birds also would have probably been classed under Type VII. 

 White feathers on the head and neck, as well as white flight feathers, 

 on the other hand, were easily seen, as in the three specimens recorded 

 as belonging to the present type. 



