BIRDS OF ONTARIO. 51 
A common summer resident. Breeding in the interior. 
Arrives early in May, departs at the end of September. 
259 Myrtle Warbler. (Yellow-rumped Wacbler.) 
(Dendroica coronata.) 
A very abundant summer resident. Breeds in the interior. 
Arrives towards the end of April, departs about the end of the 
first week in October. 
260. Magnolia Warbler. 
(Dendroica maculosa.) 
A common migrant in spring and autumn. Probably breeds in 
the interior. 
Arrives early in May, departs about the end of September. 
261. Cerulean Warbler. 
(Dendroica rara.) 
A regular but rare summer resident. Breeds throughout its range 
in the Province. 
262. Chestnut-sided Warbler. 
(Dendroica pensylvanica.) 
A common summer resident. Breeds throughout its range in the 
Province. 
Arrives early in May, departs early in September. 
263. Bay-breasted Warbler. 
(Dendroica castanea ) 
A regular but never a common summer resident. Breeds in the 
interior. This species is most frequently seen in the spring. I have 
seldom met with it in autumn. 
Arrives early in May, departs at the end of September. 
264 Black-poil Warbler. 
(Dendroica striata ) 
A regular but not generally a common migrant in spring and 
autumn. Probably breeds in the northern part of the Province. 
Arrives about the twentieth of May, departs at the end of Sep- 
tember. 
265. Blackburnian Warbler 
(Dendroica black burniz.) 
A tolerably common spring and autumn migrant in Southern 
Ontario. Probably breeds in the interior. 
