Piate 15. 



(birds 2-oths natural size, feathers natural size.) 



1. Juvenile Mistle-Thnish (Turdus v. viscivorus). 2, Juvenile British Song-Thrush (T. ph. 

 clarkei). :?, Juvenile Ring-Ouzel (T. t. torquatus). 4, Juvenile ^ Blackbird (T. m. 

 merula). 5, Juvenile British Dipper (Cinclus c. hritannicus). A, Inner greater covert of 

 juvenile Redwing {T. munims). B, Under tail-coverts of adult male of Ring-Ouzel (right) 

 and Alpine Ring-Ouzel (left.) 



