Hybrids amoiig Norwegian Birds, and their 

 Diagnoses. 



By 

 R. Collett. 



(Read at a meeting of the Societ3', Nov. 19th, 1905). 



Fam. Turdidæ. 



1. Turdus iliacus, Lin. X Turdus pilaris, Lin. 

 (mas?) (fem.?) 



Occurrence. One specimen caught, Faaberg, Dec. 1897. 



Diagn. Adult. In sise halfway between T. pilaris, and T. 

 iliacus. 



Eye-stripe whitish yéllow; rest of upper surface like that of 

 T. pilaris; rwmp greyish brown, somewhat lighter than the back. 

 Colour of the tinder surface almost as in T. iliacus, but the spots 

 on the breast and sides are somewhat triangular. The under wing- 

 coverts are of a rusty red colour with a mixture of pink. 



One specimen. I found a specimen of this hybrid among a 

 number of T. pilaris (in a game-dealer's shop in Christiania), 

 snared in Faaberg, at the south end of the Gudbrandsdal, on 

 the lith Dec, 1897. It had thus inherited from the last-named 

 species (its supposed mother) the tendency to winter in Norway, 

 while its other parent (T. iliacus) had long since departed for 

 the south. 



A detailed description of this specimen, of which the sex 

 could not be exactly determined, owing to the altogether rudi- 



Vid-Selsk. Fork. 1905. No. 11. 1 



