1913] 
Cahn : Birds of Waukesha County 
125 
Actitis macularia (Linnaeus). Spotted Sandpiper 
A common summer resident, and often, though probably not 
always, a breeding species. Found along all water-fronts until 
about the middle of October. Makes an apparently irresistible 
mark for the ambushed duck hunter, and therefore many are 
killed uselessly each year. 
Oxyechus vociferus (Linnaeus). Killdeer 
A very common summer resident and breeding species. A 
nest with the customary four eggs, which hatched June 19, 1913, 
was found in a cornfield a quarter of a mile from the Oconomowoc 
River. A good series of photographs of the sitting bird was 
obtained from this nest. No attempt was made to conceal the 
camera, and the birds showed their utter fearlessness toward it 
by actually alighting upon the box time and again while returning 
to the nest. Found commonly in flocks of as many as twenty or 
more during the early part of September, and become extremely 
wary as soon as the shooting season begins. 
Aegialitis semipalmata (Bonaparte). Semipalmated Plover 
An occasional summer resident, though far more common as a 
migrant. 
Colinus virginianus virginianus (Linnaeus). Bob-White 
A rather uncommon resident, more often seen than heard. A 
flock of fourteen was flushed from the tall grass near the outlet 
of Oconomowoc Lake, and a single bird was heard continually 
during the early part of June, 1913. On June 22, 1913, a flock 
of five was watched for fully half an hour, as they fed among 
the weeds within 50 feet of the observer. Undoubtedly on the 
increase. 
Bonasa umbellus umbellus (Linnaeus). Ruffed Grouse 
Practically exterminated from most of the county, though an 
occasional bird may still be flushed in some unfrequented woods, 
as those around Dutchman’s Lake. 
Tympanuchus americanus americanus (Reichenbach) . 
Prairie Chicken 
The “prairie chicken,” like the ruffed grouse, is practically gone, 
but occasional individuals may still be found in the more secluded 
