TURDIDA—THRUSHES. 7 
brown. Length 12 inches; culmen 1 to 1°23; wing 6 to 6:5; 
tail 4°5 ; tarsus 1°35. 
Immature Birds: Unknown. 
Distribution: A rare visitor on migration from Southern- 
Central Asia. 
Habitat : Wooded regions. 
SIBERIAN THRUSH. 
Turdus sibiricus Fad. 
Adult Male: Adove, dark slaty-grey ; head darker; wings 
dark brown, externally margined with dark grey, most of quills 
having a white blotch at base of inner web; tail-feathers 
chiefly dark-brown, some of outer ones terminating with a 
white spot; beneath, similar to back, shading into white on 
centre of abdomen ; superciliary stripe broad and white ; axtl- 
laries white and grey, under tail-coverts tipped with white ; 
bill blackish-brown; legs: and feet light brown; irides dark 
brown. Length g inches; culmen 09; wing 4°4 to 4°75; 
tail 3°4; tarsus 1°2. 
Adult Female: Above, rich olive-brown, shading into 
slaty-grey on rump: wings dark brown, externally bordered 
with reddish-brown ; tail-feathers dark brown, with terminal 
blotch of white on inner web on outermost pair ; beneath, white, 
shading into buff on breast; flanks shaded with brown; all 
feathers of lower parts except on central abdomen, tipped with 
olive-brown ; eye-stripe buff. 
Young Male (Autumn): Very like adult, but has 
head and wings washed with brown, some of wing-coverts 
tipped with ochreous-buff ; throat and breast washed with buff 
and barred. 
Distribution: A very rare straggler from Northern Asia. 
BLACKBIRD. ™ 
Turdus merula Zznz. 
Adult Male: <Adsove and beneath, uniform glossy black, 
except on quills which are slightly browner; bill orange yel- 
