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Toorukhansk. We got several nests supposed to belong to this species, but we were never able 
to thoroughly identify the eggs further than seeing the birds in the immediate vicinity of the 
nest.” | 
In Dauria the Siberian Ground-Thrush appears to be а spring and autumn migrant (Dybowski, 
J. f. O. 1872, p. 437), occurring not only in the extreme west of that province, but also in the 
extreme east (Taczanowski, J. f. O. 1874, p. 335). Godlewski says that he has observed the species 
at the south of Lake Baikal, but it is very rare and does not appear there every year. It arrives at 
the end of May, and he has killed a young bird on the 13th of October (Taczanowski, Faune 
Orn. Sibir. Orient. p. 284). 
Neither Middendorff nor Schrenck met with the species, but Radde procured two examples at 
Tarei-Nor, near Nerchinsk, in the extreme east of Dauria (Reisen im Súden von Ost-Sibirien, ii. 
p. 233). .Jankowski obtained a single example on the island of Askold (Taczanowski, J. f. O. 
1881, p. 182), and it has been recorded from Pekin (Swinhoe, Ibis, 1863, p.93). There is no evidence 
that it remains during the winter in China, all the dates of its capture being either spring or 
autumn: Amoy, April 19th (Swinhoe, P. Z. S. 1868, p. 279); Whampoa, 18th of April (Swinhoe, 
Ibis, 1861, p. 37) ; Chefoo, end of May (Swinhoe, Ibis, 1874, p. 443); Formosa, Oct. (Swinhoe, spec. 
in Seebohm Coll). Abbé David states that it is far from common in China. 
Davison found the species very common round the foot of Mount Nwalabo in Tenasserim 
(lat. 14^) in April, appearing in flocks of sixty individuals, mostly young males with remains of spots 
on the plumage (Hume and Davison, Stray Feathers, vi. 1878, p. 513), but it is not easy to determine 
whether these birds were in their winter-quarters or only on migration. Ав has already been stated, 
it has once occurred on the Andaman Islands. : 
There can be no doubt that Java and Sumatra are favourite winter-quarters of this species. Its 
occurrence in Java has been mentioned, and Mr. Carl Bock obtained many examples in Sumatra, 
some of which are in the British Museum and others in my collection. 
This bird is so very shy and skulking that scarcely anything has been recorded of its habits. 
When I was in Siberia I occasionally caught a hasty glimpse of a dark-coloured Thrush with a very 
conspicuous white eyebrow not far from the village of Kureika on the Arctic Circle, whilst the 
remains of the ice were still straggling down the Yenesei. It was an extremely shy and wary bird, 
and though I occasionally saw it crossing the open ground between the birch-plantations І did not 
succeed in shooting one until the 19th of June. I was then walking in a dense birch-plantation ; the 
leaves were not yet out on the trees, and a fortnight before the ground had been covered with a deep 
bed of snow. This had melted and exposed a thick bed of leaves, the accumulation of many years, 
amongst which the bird was searching diligently for food. 
The nest is described by Messerschmidt as being placed among the branches of a dwarf alder, 
and composed of mud mixed with grass, and lined with fine grass and small leaves. Тһе eggs are 
six in number, green with dark rufous spots. Those believed by Mr. Popham to be the eggs of this 
species differed very much from those of Turdus dubius, having a pale blue ground-colour and 
more distinct spots of reddish-brown. "They measured 1:16 inch by 0:82 inch (Ibis, 1897, p. 92). 
In the adult male the general colour of the upper parts is slaty-groy, approaching black on the 
head, each feather being darker on the margin; lores black; eye-stripe white, broad, extending 
nearly from the nostrils to the nape; wing-coverts slaty-grey; primary-coverts nearly black, with a 
broad slaty-grey patch on the outer webs ; tertials slaty-grey ; secondaries and primaries dark brown, 
margined on the outer webs with slaty-grey; tail nearly black, with the lateral pair of feathers 
paler, and the central pair suffused with slaty-grey ; there is a wedge of white more than half an inch 
long at the tips of the lateral pair, and one more than a quarter of an inch long at the tips of the 
next pair; ear-coverts slaty-grey ; underparts slaty-grey, with a band of white down the belly and 
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