1911] The Ottawa Naturalist. 225 



223. Wilsonia canadensis, Canadian Warbler. A moderately 

 common migrant and breeder. In Dow's Swamp it may be 

 found all summer. Places like that are its characteristic habitat. 

 Extreme dates: May 12th to September 10th. 



224. Setophaga ruticilla. Redstart. A common migrant and 

 summer resident. It often builds its nest in vines and bushes 

 on and near houses, or e.g., in bushes along "Lovers' Walk," 

 Parliament Hill. They first come May 5th, and the last usually 

 depart before September 10th, but in the extraordinary mild 

 fall of 1909, some were seen as late as October 9th (G. White). 



MOTACILLID^ WAGTAILS. 



225. Anthus rubescens, Pipit. A migrant to and from the 

 Hudson Bay and Arctic regions. It passes through about May 

 14th, and again from September 28th to about October 7th, 

 and probably later. As it frequents plowed fields, walking 

 leisurely and not flushing readily, it may by reason of its neutral 

 tints easily be overlooked. 



MIMID^ THRASHERS, MOCKINGBIRDS, ETC. 



226. Dumetella carolinensis, Catbird. A common summer 

 resident. It stays from May 3rd to October 7th. 



227. Toxostoma rufum, Brown Thrasher. A moderately 

 common summer resident, one that is evidently on the increase, 

 as in 1909 pairs of them could be seen in places where formerly 

 none were seen. Formerly one to two pairs nested on the 

 Experimental Farm, now five to six. It arrives about April 27th 

 and is last seen September 13th. It is one of our finest singers. 



TROGLODYTIDiE WRENS. 



228. Troglodytes aedon, House Wren. A very common 

 summer resident. Its nests are placed in cavities in posts and 

 trees, and in boxes in yards of houses put out for it, and is 

 prospering and increasing. It arrives about May 1st (earliest 

 April 21st, 1897), and the last are seen October 16th. 



229. N annus hiemalis, Winter Wren. A moderately com- 

 mon summer resident. Its habitat is the northern silent, moist 

 coniferous forest. There its song, like a long silver thread 

 entwining the dark green foliage of the trees, may be heard to 

 best advantage, especially early in the morning and in the 

 evening. In certain spots in the Beaver Meadow a few pairs 

 breed, also in the woods east of the Rifle Range. Time: March 

 26th to October 18th. 



230. Cisiothorus stellaris, Short-billed Marsh Wren. This 

 species, once put on our list, and then removed again, certainly 

 belongs there. It was first found by Mr. F. A. Saunders on 

 June 17th, 1898. On June 16th, 1905, one was taken in the 



