30 CHECK LIST OF THE 
A common visitor in spring and autumn, probably a summer resi- 
dent in the northern portion of the Province. 
They arrive early in April and the bulk have departed by the end 
of November. 
One of our most beneficial birds, its food consisting almost entirely 
of mice and grasshoppers. 
Genus AQUILA. 
141. Golden Eagle. 
(Aquila chrysaétos.) 
An irregular visitor to southern Ontario, probably resident in the 
unsettled portions of the north. 
Genus HALIAETUS. 
142. EFald Eagle. 
(Halizetus leucocephalus.) 
A resident species, which until a few years ago regularly bred in 
certain localities along the shores of our lakes, but which has now 
retired to the quiet of the interior to raise its young, visiting southern 
Ontario in winter. 
SUBFAMILY FALCONINA. FALcons. 
Genus FALCO. 
Suscenus HIEROFALCO. 
*143. White Gyrfalcon. 
(Falco islandus.) 
An accidental visitor. 
SuBGENUS RHYNCHODON. 
(44 Duck Hawk. (Peregrine Falcon.) 
(Falco peregrinus anatum.) 
A regular but not a common autumn visitor to southern Ontario. 
Rarely seen in spring. May possibly breed in the northern part of 
the Province. 
SUBGENUS AESALON. 
145. Pigeon Hawk 
(Falco columbarius.) 
A common visitor in autumn, not very frequently seen in spring, 
breeds in the north and retires southward by the end of September. 
