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181 
autumn. Entering Connecticut early in May, it passes on to the Canadian Fauna during that 
month; a few doubtless breed in elevated portions of Massachusetts, but the majority go farther 
rn north. Leaving its breeding-grounds early in September, it is commonly seen in southern New 
Ley England during that month and about half of October, generally in small, straggling companies, 
кы which flit secretly through the woods and shrubbery, or ramble quietly over the ground among 
"i ih fallen leaves. Іп some parts of Maine and New Hampshire it is the commonest Thrush, except the 
ml Robin, during the breeding-season." Mr. Bicknell (Journ. Linn. Soc. New York, i. pp. 141, 142) 
ка de has recorded it as breeding on the Slide Mountains in New York, and Dr. C. Hart Merriam in 
the Eastern Adirondacks (Bull. Nutt. Orn. Club, vi. p. 226). Оп the White Mountains in New 
deii |, Hampshire it is common at the higher levels, according to Messrs. Faxon and Allen (Auk, v. p. 153), 
hkz and Dr. Chadbourne noticed it as plentiful in the same locality up to 3000 feet (Auk, iv. p. 107). 
Ка k Dr. Warren believes that the present species breeds occasionally оп Ше higher mountains 
„Г of Pennsylvania, but the only actual record for the State seems to be that of Mr. Dwight (Auk, 
Ман» іх. p. 140). He found it only оп North Mountain in the Pennsylvanian Alleghanies, but quite 
ТІ” abundant there іп summer. 
др: Mr. White found the Olive-backed Thrush to be а common summer resident оп Маскшас 
Ын: Island in Northern Michigan (Auk, x. р. 229), and in Minnesota Dr. Hatch states that it arrives 
"m late in April or in the early part of May; it is abundant for a short time, but moves northward 
then, only a few comparatively remaining to breed, and those principally in the northern counties 
of the State (B. Minnesota, p. 439). In S.E. Dakota, Mr. Agersborg only notes the species as 
a migrant, arriving the last week in April and returning in October (Auk, ii. p. 277). Prof. Elliott 
‚oues (Bull. U.S. Geol. Surv. iv. p. 550) thinks that, like the Hermit-Thrush, this species may 
breed in the Rocky Mountains near Chief Mountain Lake. “It was only observed, however, 
in September, during the general autumnal migration, in the slight fringe of trees along the 
stream where I was collecting at the time. Іп a country so nearly treeless as is the tract lying 
between the Red River and the Rocky Mountains, the slightest pieces of woodland are eagerly 
sought by all the migrants as stopping-places for food and rest. ‘Though at other seasons 
tenanted by few species, they become populous in the fall by the presence of great numbers of 
small insectivorous and granivorous species, among which the Turdide, Sylvicolide, and Fringillide 
are conspicuous." 
At Fort Keogh, in Montana, Mr. Thorne (Auk, xii. p. 219) records the present species as 
abundant in spring, but rare in the fall of the year. Messrs. Richmond and Knowlton procured 
young birds on the 27th of July at Mystic Lake (Auk, xi. p. 308), and Mr. Williams found 
the species breeding at Belt River Cañon (Auk, vii. p. 202). Dr. Merriam mentions the finding 
of a nest in Teton Basin, in Idaho, in July 1872 (N. Amer. Fauna, no. 5, p. 108). In the 
Colorado Valley it was only noticed as a migrant by Mr. Henshaw (Rep. 100th Merid. p. 147), 
but it also breeds in the State, as Mr. Minot (Bull. Nutt. Orn. Club, v. p. 224) says that it is a 
common summer resident above 8000 feet, and he found it on Pike's Peak from 9500 feet to 
10,500 feet. 
Mr. Ridgway, in his report on the Ornithology of the 40th Parallel (p. 397), writes as 
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follows :—“ After leaving Ше Sierra Nevada, not a single individual of any of the smaller Thrushes 
ЗА! was met with until we arrived at the East Humboldt Mountains in eastern Nevada, where the 
$ А Olive-backed Thrush was encountered in considerable numbers, in the eastern cañons of that 
ж range. It was during the season of their southward migration, and it is uncertain whether they 
p came from the northward, or whether they had bred in the cañons where they were observed. 
۳ During the ensuing spring and summer they were found in still greater abundance among 
К» the Wahsatch Mountains, on the opposite side of the Salt Lake Basin, in the thickets bordering 
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