120 TREATISE ON 



dible is yellowdsh-bro"\vnj the under one pale bluish** 

 grey ; eyes hazel or imiber-brown ; cro^vn of the 

 head of the male bluish-black, breast pale but 

 dingy ash-gi'ey, slightly passing into pale wood- 

 brown; back pale cloye-bro^A^l passing into yel- 

 lowish- gi*ey ; towards the tail, inclining to dull 

 white ; the wings and tail the same as the back, 

 but darker and still more dingy ; the edges of the 

 feathers of both faintly inclining to a very dingy 

 pistachio-green ; legs and feet bluish-grey. The 

 hen is rather larger then the cock-bird, and is 

 easily distinguished from him by tl>e crown of the 

 head, which in her is of a dull chesnut-bro"\^ii ; she 

 is also paler, and altogether more of an ash-grey 

 colour. 



Song. 



The first time we heard the notes of tliis bird, 

 we mistook them for those of the redbreast and 

 the thrush, such was the similarity of its notes to 

 to theirs, particularly its low notes, which ate so 

 similar to the soft, mellow tones of the thrush, that, 

 when the latter are heard from a little distance, 

 it is not easy to distinguish them from those of 

 the blackcap; but on hearing it several times, 

 and at last seeing the bird, and observing the mo- 



