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Professor Collett has recorded the occurrence of the species in Norway (Ога. Jahrb. i. р. 37, 
1890), and Baron Snouckaert van Schauberg mentions the capture of a specimen on the 20th 
of November, 1899, near Veenwouden, in the province of Friesland, in Holland (Orn. MB. viii. 
p. 18, 1900). 
The habits of the Dusky Thrush appear to resemble those of Turdus iliacus, but Captain 
Blakiston compares them with those of the Mistle-Thrush of Europe, and says that the “ note of 
recognition is a similar kind of squeak ” (Ibis, 1862, p. 319). The nests found by Mr. Н. L. Popham 
in the valley of the Yenesei were generally placed in small isolated trees, and rarely on the ground, 
though none were more than two feet above it. “Three clutches of my eggs,” he observes, “ have 
markings of the Fieldfare's type; three others much resemble the ordinary type of the Blackbird's, 
but one is rather browner in markings than the other two; in one of these latter a single egg 
is of the Fieldfare's type, but darker in ground-colour” (Ibis, 1898, p. 493). Some figures 
of the eggs taken by Mr. Popham have been figured by Mr. Dresser in the “Ibis” for 1901 
(p. 445, pl. ix. figs. 1—4). 
Adult male in breeding-plumage. General colour above dusky brown, the feathers washed 
with vinous chestnut, which colour predominates over the lower back, rump, and upper tail-coverts ; 
wing-coverts like the back; quills sepia-brown, the secondaries externally edged with rufous; tail 
blackish, the feathers slightly edged with rufous near the base; crown of head and ear-coverts 
blackish, with a few remains of lighter margins to the feathers; a broad eyebrow, cheeks, throat, 
and under surface of the body white; a narrow moustachial line of tiny triangular black spots; 
fore-neck and chest nearly uniform black, all the feathers of the sides of the body mottled 
with black centres; under tail-coverts centred with vinous-brown ; axillaries and under wing- 
coverts vinous-chestnut, with hoary-white margins ; quills dusky below, pale chestnut for two-thirds 
of the inner web. Total length 8 inches, culmen 0:85, wing 5:0, tail 2:9, tarsus 1:25. 
Adult female in breeding-plumage. Differs from the male in having less black on the 
fore-neck and chest, these parts having black centres to the feathers like the flanks. Total 
length 7-8 inches, wing 5:0, tail 5:2, tarsus 1:25. “Bill horny black, except the basal three-fourths 
of upper tomium, and lower mandible, except tip, pale orange; feet pale greyish-brown ; iris dark 
brown" (L. Stejneger). 
Adult in winter plumage. Similar to the summer plumage, but obscured by dusky ashy-brown 
edges to the feathers of the upper parts, which are consequently not so rufous; the greater 
wing-coverts and quills broadly edged with rufous, the primaries bordered with white, especially 
near the extreme base, forming a small alar speculum; eyebrow, sides of face, cheeks, and 
throat pale fawn-colour, with a moustachial streak of black and a few scattered black spots ; 
remainder of under surface white, with more or less distinct black centres to the feathers of 
the fore-neck, chest, and sides of body. 
Young after first moult. Similar to the winter plumage of the adults, but with a good deal of 
grey on the chest, which has numerous small triangular black spots, which are similarly distributed 
on the sides of the breast; the throat buff, distinctly varied with triangular spots of black. 
Vestling. Head blackish, as also the ear-coverts ; the back ochreous-buff, mottled with broad 
blackish edges to the feathers; the wing-coverts longitudinally centred and the quills broadly edged 
with rufous-buff; under surface of body white, the chest washed with ochre, all the under surface 
spotted with black ends to the feathers. 
The male and female described were collected by Seebohm in the valley of the Yenesei, in 
lat. 663°, on the 10:h of June, 1877. "The male is figured, with a nestling bird obtained in the same 
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