THE BIRDS OF WISCONSIN. 
83 
to believe that it bred in that locality, as it probably does, rarely, 
in other parts of the state. 
Empidonax traillii (And.). TRAILL'S FLYCATCHER. 
As Mr. Wm. Brewster suggests, this form is probably an 
uncommon or perhaps accidental visitor of Wisconsin during 
migrations. A specimen taken at Delavan, August 1, 1897, has 
been identified by Mr. Brewster as typical traillii. Perhaps 
occurs as a regular summer resident in parts of southern and 
southwestern Wisconsin, but more specimens of the group will 
be necessary to satisfactorily determine its range and 
abundance. 
Empidonax traillii alnorum Brcwst. ALDER FLYCATCHER. 
A tolerably common summer resident. It arrives from the 
middle to the last of May, and is most conspicuous during late 
July and August in open, willowy marshes, often far from 
timber. Mr. Brewster has kindly examined our small series of 
this group and pronounces the birds of late May and June 
typical alnorum, suggesting that this is no doubt the breeding 
form. He writes that "it is interesting to find typical examples 
of the two forms in the same locality." As noted under the 
last, more specimens of the traillii group will have to be 
examined before an accurate knowledge of their respective 
abundance in Wisconsin can be expected. 
Empidonax minimus Baird. LEAST FLYCATCHER. 
An abundant summer resident over the entire state, and 
like the pewee, is found nesting during early and mid-summer 
in all suitable localities. It sometimes arrives as early as April 
12, but not commonly until the first of May (April 30 to 
May 5), and all leave us in September. A constant associate of 
the redstart and red-eyed vireo in thick second-growth oak 
woods, especially in the vicinity of water. 
FAfilLY ALAUDID/E. LARKS. 
Otocoris alnestris (Linn.). HORNED LARK. 
Found on the prairies during winter, ofttimes in consider- 
able numbers. The birds representing this race of the horned 
lark reach the southern part of the state late in fall, and leave 
us early in spring. We hive never known anything 
approaching typical alpestris to have been taken in Wisconsin 
in summer. It does not occur anywhere, under our observa- 
