no 
THE BIRDS OF WISCONSIN. 
to be a southern species supposed, of course, that it bred, if it 
occurred there at all. 
Helm in thophiln pinus (Linn.). BLIE-W1XGED W ARBLER. 
Rare summer resident in southern Wisconsin. One 
adult female taken by Thure Kumlien June 1 J, 1807, in the Bark 
River woods, Jefferson County. One obtained by Mr. C. H. 
Stoddard. May 7. 1885, at La Crosse (1). Save for these two 
records the bird was unknown in Wisconsin until July 11, 
L897, when we found an entire family, parents and four or five 
young, and took one of the latter, near Delavan. These had 
been undoubtedly reared here, but a careful search the next 
year (1898) produced but a single male, taken May 22. On 
May 11, 1899, one was seen nest building in the same wood. 
Three days later the nest, although still unfinished, contained 
one egg, and a bird was again seen with nesting material in 
its beak. On the 22nd. the nest was again visited, and the 
parent shot as she new from the nest, which now contained six 
eggs. But one blue-wing had as yet been seen at a time, 
although the continual "chip, chip" of the mate, the exact call 
of the one killed (which subsequently proved to be the female) 
had been frequently heard from the surrounding thicket, while 
this one was in sight. After a half hour's patient waiting he 
appeared, and at once showed his deep anxiety and uneasiness 
at finding us so near the nest. This bird was also shot and 
proved to be a male Xashville warbler (H. rubrica pilla) with 
enormously developed testes. There is not a shadow of a 
doubt that this bird was the male parent of the clutch of eggs ; 
no one could question that for a moment who had seen his 
actions at the nest, and although we watched the spot con- 
stantly the entire afternoon until nearly dark, remaining hid 
in the brush, no other bird, Xashville or blue-wing, put in an 
appearance, nor did we hear a note or call that could have 
come from either species. Furthermore although collecting 
in these woods the entire summer not another Xashville 
warbler was seen short of five miles from the place, and the 
immediate vicinity of the nest was continually and carefully 
searched for either species without success. Possibly in our 
haste to positively identify this rare Wisconsin take, more 
interesting hybrids between the blue-wing and allied species 
were destroyed in embryo, as had we known the true state of 
affairs, the eggs would have been allowed to hatch unmolested 
1. Report Bird Mig. in Miss. Valley, by W. W. Cooke, Washington 
1S88, D. 240. 
