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Bulletin Wisconsin Natural History Society [Vol. 13, No. 2 
Falco spaverius spaverius Linnaeus. Sparrow Hawk. 
An abundant summer resident. 
Pandion haliaetus carolinensis (Gmelin). Osprey 
A not uncommon bird about Green Lake. Often remaining 
the greater part of the summer. No nests have been found. 
Asio wilsonianus (Lesson). Long-Eared Owl 
A very common resident, especially in the wooded regions of 
the town of Seneca. 
Asio flammeus (Pontoppidan). Short-Eared Owl 
It is the most abundant of the larger owls. It nests in the 
wooded portions of the county, especially if these areas border 
marshlands, where it may be seen searching for food. This is 
invariably true at sunset and on dark days. 
Strix varia varia Barton. Barred Owl 
A quite common resident in the more heavily wooded portions 
of the county. Its weird call is not infrequently heard in the 
day-time, but particularly on cloudy days before storms. 
Cryptoglaux acadia acadia (Gmelin). Saw-Whet Owl 
A winter resident, especially during the cold winters when it 
visits farm buildings. 
Otus asio asio (Linnaeus). Screech Owl 
A very common all year resident, nesting in all suitable lo- 
calities. 
Bubo virginianus virginianus (Gmelin). Great Horned Owl 
A quite common all year resident, nesting in the denser woods, 
especially along the White and Fox Rivers, where its loud and 
penetrating call may be heard during the night through the whole 
year. 
Nyctea nyctea (Linnaeus). Snowy Owl 
A not uncommon winter visitant, particularly during cold 
winters, when it is very common on the marshes of the Fox and 
White Rivers. 
