CATALOGUE OF CANADIAN BIRDS. 629 
female of this species occasions probably as much trouble with the 
novice as regards identification as any of our birds, flycatchers 
excepted; but the white spot at the base of the primaries is indis- 
putable evidence and when not clearly apparent always shows when 
the feathers are parted. Found young just from the nest at Have- 
lock, Ont., July, 1894. (J. Hughes-Samuel.) Rare summer resident 
in Middlesex county, Ont., but more common in North Bruce. 
Fairly common at London, Ont., as a migrant. (W. E. Saunders.) 
Mostly a passing migrant at Guelph, Ont. A few pairs breed. 
Arrives about May 12th, leaves about Sept. 26th. (A. B. Klugh.) 
Summer resident at Penetanguishene, Ont. (A. F. Young.) Mr. 
Norman Criddle observed a warbler at Aweme, Man., Oct. 17th, 
1906, which he believes to be this species. The circusmtances under 
which it was seen are detailed in The Ottawa Naturalist, Vol. XX.., 
p. 189. Mr. Criddle is one of our most careful observers but as the 
bird was not shot there is still a little doubt about his determination. 
BREEDING Notes.—This species is common during the spring 
migrations and a goodly number stay during the summer. The 
female*displays great courage and feigns helplessness and distress, 
to the utmost degree, when one is near her nest. A nest found 
July 21st contained three nearly fresh eggs. It was placed two feet 
up in a small beech bush, well built into the fork of small limbs and 
was composed of rotten wood fibres, cocoon silk, and scantily lined 
with white horse hair. (W. H. Moore.) A nest with young birds 
was found on the 4th August, 1902, in a wood near Lake Nominingue, 
about 100 miles north of Ottawa. It was built in a raspberry bush 
and made of grass and a few leaves, lined with hairlike roots; nest 
3x2and 2x1.25. (Garneau.) On the afternoon of June 5, 1886, 
when out in a tract of low, thick underwood, about a mile to the 
west of Wildwood, I found a nest with one egg, which at first I took 
to be one of a chestnut-sided warbler, so much did it resemble the 
nest of that species in form, size, materials of composition and situa- 
tion. The egg also had a much similar appearance, but the different 
notes of the female owner of this nest soon attracted my attention, 
and I waited, a short time till she came out of the thick foliage where 
she was concealed and approached the more open space where I was 
standing, then I saw that she was quite a different species, and a 
more close examination of the nest showed that it was a more com- 
pactly formed structure than is usually made by the chestnut-sided 
