28 Rock Thrush, American Robin, Siberian Ground Thrush. 



Family— TURDID^.. Suhfaviily— TURDIN.F.. 



The Rock Thrush. 



Monticola saxatilis. LlN'X. 



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— TURDID.F. Suh family - TL 'RDIN. F. 



The American Robin. 



Turdiis migratorius, LiNN. 



OBTAINED 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 may have reached our shores in this manner. 



Family— TURDIDAt. Subfamily— TURDLW F. 



The Siberian Ground Thrush. 



Tu) ctus sibiriciis, P.A.LL. 



SOME writers admit, and others exclude this species ; one example only 

 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-S, 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 

 ihcin. 



In other liranches of Zoology, we should not necessaril}- regard a species 

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

 shores: the fact of tlicir occurrence wt)uld be recorded, and possibly an 

 illustralion published, but sul)sequent works would \\o\. be considered incomplete 

 which did not describe them as British. 



