SYLVIAD.E. 



specimens, some changing more rapidly than others ; but 

 the change from grey to brown produced by the autumn 

 moult is rapid and general, affecting all alike. 



Females and young birds in autumn do not differ much 

 from adult males at the same season, except that the mark- 

 ings about the head are less clearly denned, and the colours 

 are rather less pure. The birds are in this state of plumage 

 when caught in such numbers on the south downs. 



The vignette represents the breastbones of the Robin 

 and the Wheatear. 



