130 Bulletin Wisconsin Natural History Society [Vol. 11, No. 4 
hollow pillar on the porch of an unoccupied dwelling, and succeeded 
in raising their family despite the fact that the house was occupied 
before the young were out of the nest. 
Antrostomus vociferus vociferus (Wilson). Whip-Poor-Will 
A regular migrant, no longer really common, and probably not 
a breeding species. Arrives during the first week of May, and 
often slips through on the fall migration unnoticed. Not nearly 
as common as the nighthawk, for which it is very often taken by 
the “sportsmen” of this region. 
Chordeiles virginianus virginianus (Gmelin). Nighthawk 
A regular migrant, and occasionally a summer resident. During 
June and July of 1912, a pair of nighthawks were seen on the wing 
nearly every night, and on July 27, their number was increased by 
two, undoubtedly the young. The autumnal flight of these birds 
was particularly fine on August 31 and September 2, 1913, when 
over two hundred and fifty individuals were seen over the west 
end of Oconomowoc Lake, where they paused to feed upon the 
enormous swarms of midges dancing over the water. 
Chaetura pelagica (Linnaeus). Chimney Swift 
An abundant summer resident, nesting in chimneys either in 
the city or in the country. During 1912 a colony nested in the 
chimneys along Main Street, Oconomowoc. 
Archilochus colubris (Linnaeus). Ruby Throated Humming- 
bird 
A common summer resident and breeding species. Often found 
around beds of Salvia, or resting upon telegraph wires. These 
birds arrive when the warbler migration is beginning — about the 
end of the first week in May, but nesting does not begin until the 
end of the month or early June. Rarely seen in the fall after the 
third week in September. 
Tyrannus tyrannus (Linnaeus). Kingbird 
A common summer resident, breeding throughout the county. 
In June, 1913, a nest was found on an overhanging branch of a 
basswood ( Tilia americana), within 10 inches of the water — just 
barely out of reach of the waves. In contrast to this, another 
nest was found in a cedar, fully 30 feet from the ground. 
