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Young. More ochraceous-brown than the adult female, with longitudinal ochraceous streaks 
down the centre of the feathers of the upper surface; the wing-coverts and quills edged with 
ochraceous-buff; under surface of body white, the sides orange-buff, with a very distinct moustachial 
line of black; the feathers of the under surface broadly spotted or barred with black at 
their ends. 
The description of the male is taken from a specimen obtained by Dr. Dybowski near 
Lake Baikal, and that of the female from a hen bird collected by Seebohm during his expedition 
to the Yenesei, Specimens from the last-named locality are also figured. IR. B. 5.1 
VOL. 1, ФЕ 
