BIRDS OF ONTARIO. 33 
Very destructive to poultry, but destroying many rats and small 
mammals. 
Genus NYCTEA. 
158. Snowy Owl. 
(Nyctea nyctea.) 
A winter visitor occurring in varying numbers almost every 
season. 
Genus SURNIA. 
159. Hawk Owl. (American Hawk Owl.) 
(Surnia ulula caparoch.) 
A regular winter visitor in northern Ontario, not often seen in 
the southern portions of the Province. 
Order COCCYGES. Cuckoos, etc. 
Suborder CUOULI. Cuckoos, etc. 
FamILy CUCULIDA. Cuckoos, ETC. 
SUBFAMILY COCCYZIN A. AMERICAN CUCKOvS. 
Genus COCCYZUS. 
160. Yellow-billed Cuckoo. 
(Coceyzus americanus.) 
A regular but rather rare summer resident, breeding throughout 
its range. 
161. Black-billed Cuckoo. 
(Cocecyzus erythropthalmus.) 
A common summer resident, breeding throughout its range. 
Arrives about the twentieth of May, departs about the end of 
September. 
Suborder ALCYONES. Kingfishers. 
Famity ALCEDINIDA. KInGFIsHERs. 
Genus CERYLE. 
Suscenus STREPTOCERYLE. 
162. Belted Kingfisher. 
(Ceryle aleyon.) 
A common summer resident, breeding throughout its range. 
Arrives about the beginning of April, departs early in October. 
I have several times found these birds spending the winter on 
rapid streams in southern Ontario. 
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