NATURAL HISTORY, TORONTO REGION 
260. Prairie Warbler. Dendroica discolor. Acci- 
dental, two records. 
261. Oven-bird. Seiurus aurocapillus. Regular 
migrant, abundant; a not very common summer 
resident; breeds. 
262. Water Thrush. Seiwrus noveboracensis no- 
veboracensis. Regular migrant, usually not very 
common. 
263. Grinnell’s Water-Thrush. Sevurus novebora- 
censis notabilis. Birds referable to this form occur 
with the preceding (Auk, 1908, p. 487). 
264. Louisiana Water-Thrush. Seiurus motacilla. 
Accidental, two records. 
265. Connecticut Warbler. Oporornis agilis. Reg- 
ular migrant, not common. 
266. Mourning Warbler. Oporornis philadelphia. 
Regular migrant, not uncommon; rare summer resi- 
dent; breeds. 
267. Maryland Yellow-throat. Geothlypis trichas 
trichas. Regular migrant, common; rare summer 
resident. 
268. Wilson’s Warbler. Wilsonia pusilla pusilla. 
Regular migrant, common. 
269. Canada Warbler. Wilsonia canadensis. Reg- 
ular migrant, common, probably a rare summer resi- 
dent. 
270. Redstart. Setophaga ruticilla. Regular mi- 
grant, abundant; fairly common summer resident; 
breeds. 
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