Harris—Birds of the Kansas City Region. 321 
DENDROICA PALMARUM PALMARUM (Gmelin). Palm Warbler. 
Regular but not numerous migrant. 
The Palm Warbler arrives from April 27th to May 7th but is 
never very numerous. It passes through on the southward 
flight between the 5th and 11th of October. 
Usually single birds are seen, though sometimes they occur 
in small troops of twos and threes. They may be looked for in 
the timber of the Missouri and Blue Valleys and in Swope 
Park. 
DeENpDROICA DISCOLOR (Vieillot). Prairie Warbler. 
Occasional. 
There is but one known record of the occurrence here of the 
Prairie Warbler—May 6, 1911, near Dodson. 
SEIURUS AUROCAPILLUS (Linn.). Oven-bird. 
Common migrant and rather rare summer resident. 
The Oven-bird arrives during the last week of April and in- 
creases in numbers in the first week of May. At this time it 
may be looked for in all thickly wooded places over the county, 
especially in the bluff and bottom regions and in such places as 
the upper Blue Valley. The migrants are again present during 
September. 
The only places in the county where this warbler is known to 
breed are a few wild sections of the bluff regions, as near Sib- 
ley, and on the dry wooded ridge in Swope Park south of Hazel 
Dell. In the latter place the songs of the Ovenbird and Ken- 
tucky Warbler, which are very similar, may be heard together. 
SEIURUS NOVEBORACENSIS NOTABILIS Ridgway. Grinnell’s Water- 
Thrush. 
Not rare migrant. 
This northwestern form of the Water-Thrush passes through 
this region regularly during the first half of May (April 29, 
1917, earliest; May 15, 1916, latest) and during September. 
It is to be looked for either in the same kind of territory as 
that frequented by the southern species, which is the breeding 
form for this region, or in swampy places in woods. With the 
aid of glasses the two forms are readily distinguishable in the 
field and may be further identified by their noticeably different 
songs. 
The Grinnell’s Water-Thrush is a regular migrant through 
