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Bulletin Wisconsin Natural History Society [Vol. 11, No. 4 
species. A single individual frequented the large tamarack swamp 
near Golden Lake during the summer of 1912, but no nest was found 
and only the one bird was seen. 
Cryptoglaux acadica acadica (Gmelin). Saw-Whet Owl 
A regular winter resident, and occasionally at least a summer 
resident; possibly even a breeding species, though there is no 
direct evidence. Dr. F. C. Rogers reports that “in June of 1912 
three saw- whet owls roosted daily in a tree near the lake.” This 
was near the east end of Oconomowoc Lake. 
Otus asio asio (Linnaeus). Screech Owl 
A common resident found, though not abundantly, throughout 
the county. The birds breed in any suitable hollow tree, the eggs 
being laid about the third week in April. It may be of interest 
to note that, in the writer’s experience at least, the gray plumaged 
bird is commoner than the brown in this region. The gray is 
apparently dominant, the brown recessive. Feeds largely on 
mice, though feathers of bluebird, house wren and song sparrow 
have been taken from a nest containing young. 
Bubo virginianus virginianus (Gmelin). Great Horned Owl 
A rare winter or very early spring visitor, and not a breeding 
species. On January 10, 1910, a single individual was shot near 
Pine Lake, and one bird was reported for January 3, 1911. 
Coccyzus americanus americanus (Linnaeus). Yellow-Billed 
Cuckoo 
A common summer resident and breeding species, found through- 
out the region. More common than the black-billed species. 
It arrives later in the spring than that species, and leaves early in 
September. 
Coccyzus erythrophthalmus (Wilson). Black-Billed Cuckoo 
A regular summer resident and breeding species. Arrives early 
in May, and remains usually until severe frosts drive it south. 
Two were seen on October 3, 1913. 
Ceryle alcyon (Linnaeus). Belted Kingfisher 
An abundant summer resident and breeding species. The first 
individuals arrive the last of March, but the birds do not begin 
to nest until well along in April, during which interval they are 
