THE BIRDS OF WISCONSIN. 
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before it leaves southern Wisconsin in May. Often taken as 
late as May 10, and even May 16. We have one adult male 
shot on Rock Prairie, Rock County, on June 2. It is fully 
as common as thirty years ago. 
Calcarius pictns (Swains.). SMITH'S LONGSPUR. 
This longspur cannot be classed otherwise than as rare 
and of extremely erratic occurrence in Wisconsin. Dr. Hoy 
met with considerable numbers prior to 1852. Although we 
have looked for it very carefully on the prairies among the 
common longspurs we have found it but a few times, and 
never in flocks of any size. Presumably the migration is from 
the northwest and they merely cross the southern counties of 
Wisconsin in fall, as they are not at all rare on the prairies of 
Illinois in winter. 
Pooecetes gramineus (Qmch). VESPER SPARROW. 
The vester sparrow is one of the most abundant of roadside 
birds the entire summer, nesting wherever there is sufficient 
grass to cover its eggs. It arrives the first of April, and for a 
short time is found, as often in the south, in the woods, but 
on the approach of the nesting season it forsakes the trees for 
the open fields and pastures. 
Passerculiis sandwicliensis savanna (Wils.). SAVANNA SPARROW. 
An abundant summer resident. Arrives early in April, 
and is common by the latter half of the month. Nests on the 
dry marshes and prairies, but in the fall is a common bird 
about the ponds and lakes, in flocks, spending much time 
among the rushes, over shallow water. 
Cotnrniculiis savannaruin passerinus (WUs.). GRASSHOPPER 
SPARROW. 
Common summer resident over most of the state. Like 
some others of the genus the grasshopper sparrow appears to 
nest in scattered colonies. In the breeding season one may 
go for miles without seeing an individual of the species, and 
then suddenly find it abundant, a male on nearly every fence 
post. 
Am mod minus henslowii (Autl.). HENSLOW'S SPARROW. 
Until recently our only knowledge of the occurrence of this 
seclusive species in the state was based on the capture of six 
specimens near Milton. The first of these, a male, was taken 
