28 Rock Thrush, American Robin, Siberian Ground Thrush. 



Family— TURD ID ^. ■ ' Subfamily— TURDIN/E. 



The Rock Thrush. 



Monticola saxa/i/is. LiNN. 



ADMITTED, because one specimen was shot at Therfield, Herts., in 1843. 

 So far as I can see, there is no more reason for admitting these birds to 

 our list than for excluding the following : — 



Family— TURDIDAi. Subfamily— TURDIN.F. 



The American Robin. 



Turdus migralorius, LiNN. 



BTAINED at Dover ; but excluded, on the ground that it may have 

 escaped from captivity. In these days of aviculture, even the rarest and 

 least suspected birds ma}' have reached our shores in this manner. 



O 



Family— TURDID^. Subfamily— TURBINE. 



The Siberian Ground Thrush. 



Turdus sibiricus, Pall. 



SOME writers admit, and others exclude this species ; one example onl}' 

 having been obtained (on the authority of a dealer) between Guildford 

 and Godalming, in the winter of 1860-61. 

 Dr. H. O. Forbes says that he on several occasions, during the terrible frost 

 of 1894-5, saw two of these birds in his garden at Liverpool, feeding in company 

 with Starlings, Sparrows, Thrushes, and Blackbirds : he was quite close, and able 

 to identify them with certainty ; he even made an unsuccessful attempt to catch 

 them. 



In other branches of Zoology, we should not necessarily regard a species 

 as British, on the score of one or two examples having been obtained on our 

 shores : the fact of their occurrence would be recorded, and possibly an 

 illustration published, but subsequent works would not be considered incomplete 

 which did not describe them as British. 



