SUMMER BIRDS OF FLATHEAD LAKE. 303 



675a. Grinnell's Water-Thrush. Seiurus noveboracensis notabilis. 



This water-thrush was heard regularly in the swampy woods at the 

 head of Swan lake, singing cheerily from the tangled bushes, but it 

 managed to elude capture until July 10, 1903, when it was still in song. 

 It was also heard in the swamp-woods near the mouth of Swan river. 

 There is no doubt that Grinnell's water-thrush breeds in suitable localities 

 in the Flathead region. 



725c. Western Marsh Wren. Cistothorus palustris plesius Ober. 



A specimen of this wren was taken in the marsh at the head of Swan 

 lake, July 26. It was singing vigorously, and near it an unfinished nest 

 was found, the only evidence of its nesting. 



763. Varied Thrush. Ixoreus naevius (Gmel.) 



The varied thrush was found to be common at the head of Swan lake, 

 where it flitted in the dark forest of the mountain-sides. An old nest 

 was brought to me, containing fragments of shells easily indentiflable. 

 The nest was made like one of the olive-backed thrush, outwardly of 

 twigs and lichens, lined with soft whitish fibers. It is reported to nest 

 very early. The trappers in the neighborhood, and the person who 

 brought me the nest, asserted that this species is a winter resident as 

 well in this region. 



