Notes on Birdsof Winchendon, Mass. 
William Brewster. 
Sylvania canadensis. — Throughout the spruce swamps the Canadian 
Warbler was everywhere abundant. A brood of young barely able to fly 
were met with June 25, 1887, and the next day Mr. Purdie took a set of 
eggs rather far advanced in incubation. The nest was in the face of a low, 
sphagnum-covered mound about eighteen inches above its base. In the 
soft mould behind the outer covering of sphagnum the birds had excavated 
a cavity about the size of one’s fist. In the bottom of this cavity was 
the nest, a loosely formed, but nevertheless neat structure, composed out- 
wardly of dry leaves, and lined with pine needles, black rootlets, and a 
little horse hair. The bird entered by a small round hole, the bottom of 
which was about on a level with the top of the nest. All the nests (a 
dozen or more) of this species which I have examined were built like the 
one just described, although the height above the ground has varied, one 
which I took at Lake Umbagog in 1879, being higher than my head in a 
patch of moss that covered the face of a perpendicular cliff. I have yet to 
see a nest placed on the ground and open at the top as most of the book 
‘ descriptions indicate. 
Auk, V, Oct,, 1888. p .392 
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