108 
THE 
BIRDS OF 
WISCONSIN. 
Vireo philadelphieus (Cass.). PHILADELPHIA VIREO. 
A regular migrant, especially through the eastern half of the 
state, where it is of rather common occurrence. It is usually 
found in company with the migrating warblers in May and 
September. It is much more common during the autumnal 
migration than in spring. 
Vireo gilvus (ViciU.J. WARBLING VIREO. 
In some sections of the state the warbling vireo is an 
abundant summer resident, and one of the most common of 
breeding birds, wliile in other less fortunate districts it seems 
to be confined largely to migrations, although plenty enough 
then, and appearing in good numbers during late summer. 
The species is at more at home in the vicinity of dwellings and 
along the roadsides than its near relatives, nesting, as a rule, 
in these localities and leaving the deeper woodlands to the 
equally abundant red-eyed. 
Vireo flavifrons Vieill. YELLOW-THROATED VIREO. 
The yellow-throated vireo is a common summer resident 
in all parts of the state, but by no means so abundant gener- 
ally as either olivaceus or gilvus, though exceeding the latter 
in numbers in some localities. During the migrations, May 
and September, it is more abundant than at any other time, 
and is then found everywhere that there are trees, seeming to 
prefer the open groves to the thicker growths. The nest is 
one of the most beautifully made of any of our birds, and it is 
indeed a fine sight to watch a pair of these vireos at work on 
the little basket-like structure that is to contain the equally 
exquisite eggs. 
Vireo solitaries (Wils.). BLIE-HEADED VIREO. 
A common migrant in May and September, and a regular 
summer resident in limited numbers. Dr. Hoy reported it 
as nesting at Racine, and we have noted it as a summer resi- 
dent at Madison, Two Rivers, Milwaukee and Jefferson. We 
have, however, found but one nest (Bark River Woods. 
Jefferson County), and this contained young almost able to 
flv. It appears to be more common than formerly. 
Vireo noveboraeeiisis (Gmcl.). WHITE-EYED VIREO. 
A rare summer resident in southern Wisconsin. So few 
records are obtainable at other points than Lake Koshkonong 
that we are able to learn but little regarding the distribution 
