BIRDS OF ONTARIO. 57 
294. Ruby-crowned Kinglet 
(Regulus calendula..) 
Common during the spring and autumn migrations. Prob bly 
breeds in the interior. 
Arrives about the middle of April, departs at the end of October. 
SUBFAMILY POLIOPTILINA. GNATCATCHERS. 
Genus POLIOPTILA. 
295. Blue-gray Gnatcatcher. 
(Polioptila czerulea.) 
A rare summer resident of the south-western counties, breeding 
where it occurs. 
Famity TURDIDA. THRUSHES, BLUEBIRDS, ETC. 
SupFaAMILY TURDINA. 'THRUSHES. 
Genus HYLOCICHLA. 
296. Wood Thrush. 
(Hylocichla mustelina.) 
Fairly well distributed througheut southern Ontario but nowhere 
abundant. Breeds wherever it occurs. 
Arrives early in May, departs about the middle of September. 
297. Wilson’s Thrush. 
(Hylocichla fuscescens.) 
An abundant summer resident, breeds throughout its range in the 
Province. 
Arrives early in May, departs at the end of August. 
298. Grey-cheeked Thrush. 
(Hylocichla aliciz.) 
A common migrant in spring and autumn, breeds far north. 
Arrives about the middle of May, departs early in October. 
299. Olive-backed Thrush. 
(Hylocichla ustulata swainsonii.) 
A common migrant in spring and autumn. Breeds far north. 
Arrives about the middle of April. departs early in October. 
300. Hermit Thrush. 
(Hylocichla aonalaschke pallasii). 
