126 
THE BIRDS OF WISCONSIN. 
still in the nest up to June 15 or 20, and the families remain 
together the entire summer. Mr. Clark has never taken this 
species in Dunn County during a great many years of active 
collecting and observation. It is doubtful if it is common 
north of the southern tier of counties, except along Lake 
Michigan, where it is found in fair numbers as far north as 
Two Rivers. 
FAMILY TURDID^E: THRUSHES, BLUEBIRDS, ETC. . 
Hylociclila mustelina (Gmcl.). WOOD THRUSH. 
In south and central Wisconsin the wood thrush is a 
common summer resident. Arriving from the south the last • 
few days of April, or very early in May, it at once sets about 
nest building, and incubation is usually completed, or nearly so, 
by June 1. The firm, solid nest is too often insecurely placed 
in its position in some bush or frail sapling, and frequently 
meets with disaster from even a light storm, delaying the birds 
with their family until later in the season. The majority leave 
by the first half of September and all have gone before 
October 1. One of the finest of forest songsters, its beautiful 
notes are best and most often heard, in all their richness, at 
break of day in some thick wood bordering on water, as it is in 
such places that the birds usually make their summer home. 
In Outagamie County and at De Pere, Grundtvig and Willard 
noted this species only as a rare straggler. 
Hylociclila fuscescens (StephJ. WILSON'S THRUSH. 
A common migrant and a regular summer resident in the 
northern half of the state. Breeds sparingly farther south, 
even to the southern counties. Most abundant in southern 
Wisconsin during the spring migration from May 7 to May 25. 
Hylociclila fuscescens salicicola Ridgw. WILLOW THRUSH. 
A single specimen taken at Delavan, May 6, 1899, and 
identified by Mr. Wm. Brewster, is the sole claim for introduc- 
ing this race here. We are of the opinion that a careful exam- 
ination of the migrating f uscescens will reveal numbers of this 
form, especially, it would seem, in the western part of the 
state. 
