THE BIRDS OF FLOYD COUNTY, IOWA. 249 
A fairly common migrant. Mrs. Tuttle reports it at Osage 
on August 23. As Mr. Gabrielson did not question this record, 
the specie may be regarded as a possible summer resident for 
Mitchell County. 
194. Dendroica fusca (Miiller.) Blackburnian Warbler. 
An irregular and rather uncommon migrant. I saw seven in 
the southern part of Charles City on May 22, 1917, and mem- 
bers of the little flock remained about the locality until the 
30th. 
195. Dendroica virens (Gmel.) Black-throated Green 
Warbler. A rare migrant. My last record is for a single 
specimen, seen about three miles south of Nora Springs, on 
May 6, 1917. 
196. Dendroica palmarum (Gmel.) Palm Warbler. An 
uncommon migrant, the only record for the county being by 
Mr. Brown, who saw the species in Charles City on May 22, 
LS. 
197. Seiurus aurocapillis (Linn.) Oven-bird. In some 
years this species is a common migrant, in others it is almost 
rare. Its status in summer is rather a question. Spring 
arrival is in the first week of May; the autumn migration 
takes place mid-September. I have never found nests, 
and have rarely seen the birds in. summer, from which 
1 conclude that it is an uncommon summer resident. < 
198. Seiwrus noveboracencis notabilis. (Grinn.) Grinnell’s 
Water-thrush. A tolerably common migrant, arriving May 
G6 to 15. It probably does not occur as a summer resident. 
199. Seiurus motacilla (Vieill.) Louisiana Water-thrush. 
The Louisiana Water-thrush is a common migrant, arriving 
May 5 to 12, and reaching its height in numbers May 12 to 
15. No nests have been found, but Mrs. Tuttle has seen the 
species in Mitchell County as late as August 15, and I have 
seen it near Charles City in August, and near Floyd on July 
19, 1916, July 30, 1918, and in August. From these records 
it appears that the species is an uncommon summer resident. 
200. Oporornis agilis (Wilson) Connecticut Warbler. 
A rare or decidedly uncommon migrant. Brown records it- 
for Willow Pond on May 20, 1917; I have it at the same 
