( 243 ) 

 SEQUENCE OF PLUMAGES IN BRITISH BIRDS. 



II. — THE MISTLE-THRUSH, SONG-THRUSH, REDWING 

 iND FIELDFARE.* 



BY 

 C. B. TICEHURST, m.a., b.c, m.r.c.s., m.b.o.tj. 



MISTLE-THRUSH. Turdus viscivorus, L. 



MALE and FEMALE. 



Down-Plumage. Greyish-white, some pre-pennse having 

 buffish-white tips. Distribution — Inner and outer supra-orbital, 

 occipital, humeral, spinal, and ulnar. In some there is a pre- 

 penna on the bastard- wing (c/. Vol. II., p. 188). 



Juvenile Plumage. Acquired while in the nest, the 

 Down-Plumage being completely moulted. 



Whole head, hind-neck and mantle greyish-brown to huffish-brown, 

 each feather having a brown-black edging, and a whitish cream-coloured 

 centre (larger and more wedge-shaped on the mantle, more elongated 

 on the scapulars) ; rump greyish-buff to ochreous-buff, with less distinct 

 pale centres to the feathers and indistinct dark tips ; upper tail-coverts 

 greyish-brown with pale centres and margins ; lores and indistinct 

 post-orbital streak buffish-white or cream ; ear-coverts buffish with 

 black terminal markings ; cheeks whitish tipped with brown-black ; 

 moustachial stripes whitish with well marked brown-black tips ; chin and 

 upper-throat dull white ; lower-throat and breast buffish-white with dark 

 terminal markings, rounder and smaller on the breast than in the 

 First Winter-Plumage, triangular on the breast ; belly and flanks dull 

 white or buffish-white with narrow dark tips to some of the feathers ; 

 under tail-coverts buffish-white with the basal brown markings not so 

 well defined as in First Winter-Plumage or almost absent ; tail greyish- 

 brown, lighter than the primaries, with indistinct barring, the outer 

 pair paler on the outer web with tips and terminal inch of inner webs 

 grey-white, the next two pairs tipped and edged with grey-white 

 on the inner webs ; primaries and secondaries very dark brown, the 

 innermost primaries and all the secondaries edged and washed with 

 pale golden-buff to creamy buff, becoming ochreous on the inner two 

 or three secondaries ; primary-coverts very dark brown washed on the 

 outer webs with golden-buff ; greater coverts very dark brown with a 

 faint wash of golden-brown on the edges of the outer webs, and a mesial 

 terminal streak of ochreous to the inner three or four and ochreous tips 

 to all ; median and lesser coverts brown with a mesial streak of ochreous 

 becoming broad at the tip ; axillaries and under wing-coverts white. 



N.B. — There is some individual variation in the intensity of the 

 coloration of the upper and under-parts and in the size of the markings, 



* The descriptions of the plumages are taken from birds which have 

 just assumed that plumage or, if the plumage be acquired without a 

 moult, then from birds which are about to, or have just begun to nest. 



