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. (/. Hughes-Samuel.) Rare summer resident 

 in Middlesex county, Ont., but more common in North Bruce. 

 Fairly common at London, Ont., as a migrant. (yV. 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. (.4. 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 

 femalejdisplays great courage and feigns helplessness and distress, 

 to the utmost degree, when one is near her nest. A nest found 

 July 2 1 St 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. (\V. 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 

 3x2 and 2 X 1.25. (Garneau.) On the afternoon of June 5, 1886, 

 when out in a tract of low, thick underwood, about a mile to the 

 west of Wildv/ood, I found a nest with one egg, which at first I took 

 to be one of a chestnut-sided w^arbler, 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 



