132 
THE BIRDS OF WISCONSIN. 
School was secured from a local taxidermist, who said it was 
shot at Lake Koshkonong. Later developments, however, 
failed to verify this. 
Falco (Hierofalco) sp. GYRFALCOX. 
Some species of gyrfalcon lias been credited to the fauna of 
Wisconsin in an early day. a thing by no means impossible or 
unlikely; but there is no actual record obtainable at present. 
There was formerly a specimen preserved at Oshkosh, which 
was said to have been killed near Lake Winnebago. 
Falco liiexicanus Schlcg. PRAIRIE FALCON. 
An intimate friend of Thure Kumlien's. and a very close 
observer of birds, often spoke of a hawk which he said was very 
close to the duck hawk, and was quite annoying in chicken 
shooting on the larger prairies at an early day. He secured a 
specimen in the fall, sometime in the early sixties, that came 
into the possession of Thure Kumlien in a badly decomposed 
state, but was preserved. This bird was never satisfactorilv 
identified otherwise than as a young prairie falcon, which it 
probably was. The specimen, however, is not at our command 
at present, and we cannot give the species a place in the list, 
though quite sure of the identity. 
Empidonax virescens (YicilL). GREEX-C RESTED FLYCATCHER. 
We have never taken this species in Wisconsin, and all the 
observers with whom we have had correspondence have also 
failed to find it. Hoy and some later writers include it in their 
lists, but evidently without positive proof. The fact that Hoy 
appears to have been somewhat mixed on his flycatchers, as 
indeed many at that time were, and that all recent collections 
fail to produce a specimen, although furnishing both varieties 
of traUlU, whereas Hoy included but one, of course, leads us to 
believe that a mistake has occurred, and we await future 
developments. 
Centronix bairdii (Aud.J. BAIRD'S SPARROW. 
This species has been credited to Wisconsin, and though it 
is by no means impossible that it might occur, the record in 
question is open to suspicion, as the balance of the skins in the 
box, some twenty in number, were taken near Vermillion, 
South Dakota. 
