Mr. H. Seebohm on the Ornithology of Siberia. 148 
in the severest part of the winter. Their crops were full of 
the buds of birch and hazel. 
Lacorus aLBus (Gm.). 
The Willow-Grouse is a migratory bird in Siberia. It 
breeds on the tundra, and winters in the forests. As we 
sledged down the Yen-e-say’ in April we once or twice saw 
flocks of these birds flying northwards, apparently on migra- 
tion. The sailors told me that Willow-Grouse were common 
at the Koo-ray!-i-ka in autumn, but disappeared in midwinter. 
The first I shot was on the 15thof May. It was in full winter 
plumage, except a band of chestnut feathers round the neck ; 
but on raising the white feathers on the crown the new crop 
of chestnut feathers was visible. 
I very seldom saw a bird until the ice on the river began 
to break up, when they were more plentiful for a week or 
two, after which they disappeared from the forests. A bird 
I shot on the 6th of June was in full winter plumage, except 
a chestnut ring round the neck, a sprinkling of chestnut fea- 
thers on the crown, and two or three chestnut feathers on 
the shoulders and scapulars. On the 4th of July, in lat. 67°, 
where patches of tundra were found between the forest and 
the river, I found them breeding in full summer plumage. 
On the 22nd of July, in lat. 714°, they had young. 
LAGOPUS RUPESTRIS, Gm. 
Professor Newton was the first to point out to me the fact 
that my Yen-e-say’ skins labelled LZ. mutus were not that 
bird, but most probably L. rupestris. I brought home two 
males and a female, all shot on the 22nd of July, in lat. 714°, 
four or five hundred feet above the level of the sea. I also 
brought home a skin in winter plumage in which the space 
between the eye and the bill is black; but as I bought it ina 
frozen state on the Arctic circle, it may have been brought 
down from a locality much further north. 
The female differs from a female of L. albus, shot on the 
same day in the valley, in having a slenderer bill, and in 
having the Gastficts of ite back pana cipal aisle ae 
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