CATALOGUE OF CANADIAN BIRDS. 64 1 



arrives about May 8th and leaves about August i8th. (A. B. 

 Klugh.) One specimen only of this distinctive species was secured 

 at Pembina — perhaps its western if not its northern limit. {Coues.) 

 A common summer resident in the wooded parts of Manitoba. Its 

 choice of locality usually causes it to be found chiefly in half -open 

 woods, especially along the edges of low, marshy places. It fre- 

 quents the tops of the highest trees. {E. T. Seton.) Tolerably 

 common at Aweme, Manitoba, where it breeds. (Criddle.) Very 

 abundant as a migrant in Manitoba, breeds sparingly throughout the 

 province. (Atkinson.) 



Breeding Notes. — Found a nest in Beechwood cemetery near 

 Ottawa, which was built in an upright crotch about six feet from 

 the ground. The nest was a loosely woven mass of dried weeds and 

 fibrous substances lined with fine grass and horse-hair. Eggs 4, 

 white with reddish brown markings. (G. R. White.) Nests around 

 Ottawa in June and also at Lake Nominingue, 100 miles north of 

 Ottawa, in raspberry bushes and low shrubs; the nests are made 

 with grasses and strips of bark lined with vegetable fibres and finer 

 strips of bark; nest 3x2 and 2 x 1.25. {Garneau.) On May 22nd 

 of the past year (1900) not far distant from each other, I noticed 

 two newly formed nests of this bird ; the first seen was deep in the 

 underwood, and placed in the fork of a small bushy maple about 

 twenty inches off the ground ; this was so bulky and compactly built 

 that at first I took it to be a nest of an indigo bird ; it was formed of 

 a kind of woody fibre gleaned from decayed timber, vines and grasses, 

 and lined with long, black horse-hair, which it must kave taken the 

 builder a good deal of time, with much trouble, to collect and place 

 in position ; on the above date this nest contained an egg of the cow- 

 bird, which I removed and — five days after— it contained three eggs 

 of the chestnut-sided warbler, and on these the female was incubat- 

 ing, and as the usual set of eggs of this species numbers four, it was 

 evident that the cow-bird had removed one of the warbler's when 

 she deposited her own ; this tramp among birds, is one of the worst 

 enemies with which the whole family of the warblers has to contend, 

 as many of their nests are found to contain one or more of the cow- 

 bird's eggs; and there is danger that the progeny may destroy the 

 whole brood in the nest of the species in which it is cradled ; on one 

 occasion I found a nest of the chestnut-sided warbler which contained 

 four cow-bird's eggs, and but one of the warbler's own ; the eggs of 

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