68 
Grundtvig on Warblers of Wisconsin. 
[April 
17th they were again quite numerous, but the very next day none 
could be found. After the 18th only a few were noticed. June 
23 I found a nest of this species containing eggs. 
Protonotaria citrea ( Gm.) Bd. May 4th I found among a 
flock of Warblers that were flitting about in some low bushes, a 
handsome male of this species, now in the collection of S. W. 
Willard, West De Pere, Wise. It arrived in company with D. 
coronata and D. blackburniae. 
Helminthophila chrysoptera (Z.) Bd. Two males of 
this species were taken May 15th and one on the 18th. The 
next two days it appeared singly in the different flocks, but the 
2 1 st both sexes arrived in quite large numbers, only exceeded by 
Dendrceca striata , H. peregrina , and D. maculosa , It appar- 
ently nested in thickets in a low, wet place, but continued search 
failed to reveal its nest. 
Helminthophila nificapilla ( Wits.) Bd. I first discovered 
this Warbler May 3, when five were noticed in some low shrubs. 
The 5th I found it intermingled with many of the other flocks, 
and the 6th it rather outnumbered its bush associates, but from 
the 6th to the 9th only a few were seen. The 10th it was quite 
numerous everywhere, and increased in number until the 12th, 
when it was only exceeded by Setophaga ruticilla. After this 
date it was rather scarce along the rivers, but still remained quite 
numerous in the swamps, where it apparently nested, although 
no traces of a nest could be discovered. 
Helminthophila celata {Say) Bd. April 30 a female of 
this species was taken on a meadow east of Wolf River, in com- 
pany with a single D. coronata. After May 1 I found both sexes 
quite common, still associating more or less with D. coronata. 
The last one was observed May 9th. Coues, in his “ Key to 
North American Birds,” describes this Warbler as never ashy 
about the head,” and also gives the size as being the same as that 
of H. ruficapilla. This, however, differs from my experience, 
as many of the specimens were very ashy about the head, while 
all of them were larger in all proportions than H. ruficapilla. 
From a large series of specimens of both species, I have carefully 
compiled the following measurements, giving both extremes in 
each case. 
Length. Extent. Wing. Tail. 
H. celata , 5 “ 4 s 7 f — 7 # 2 tf 2 — l l 
H. ruficapilla , 4! — 4 T 5 g 7 § — 2 i — 2 f l i — T i 
