— 14— 



nest was examined on July 3, whose complement was two eggs 

 somewhat advanced in incubation, a fact indicative of a second 

 laying at least. 



All the nests of the American redstart examined by the 

 writer in the Flathead region were placed in upright crotches 

 formed by very small twigs branching from the main stem. 

 The sites varied between eight and twenty feet from the 

 gi'ound, and were uniformly in the slender willows. 



An illustration of a typical nest is given, Plate IV., Fig. 3. 

 It is a neat, closely-woven structiire, made principally of soft 

 vegetable fibers, fine stems and rootlets, downy feathers, and 

 bits of delicate leaves, thatched with fragments of gossamer. 

 It stands two inches in height, with an external diameter of 

 two and three-eighths inches. The cavity is one and five- 

 eighths inches in diameter, and one and three-eighths inches 

 deep. 



The usual nest complement seems to be four eggs; however, 

 a nest was mentioned containing only two eggs, well incubated. 

 The eggs are quite variable in amount of markings. The 

 ground color is white, upon which the markings of reddish 

 brown are found in irregular specks and blotches. 



MACGILLIVEAY'S WAEBLEE, Geothhjpis macgillivrayi 



(Aud.) 



Like the willow thrush, Macgillivray's warbler appeared to be 

 less common than might be imagined from the suitable 

 environments. Only one nest was noted; however, as this nest 

 complement was so far advanced in incubation that only one 

 of the eggs was saved for a specimen, it is likely that the 

 lateness of the season precluded the finding of other nests 

 of this elegant ground warbler. Favorable localities in the 

 neighborhood were searched repeatedly without results as de- 

 sired. 



The nest mentioned was found in a grass tuft beside a 

 trail made by anglers in passing up and down Swan River. 

 It was noted on June 14, the day of the writer's arrival at the 

 Station. The female flitted from the nest to adjacent shrub- 

 bery, acting quite indifferent regarding observation of her 

 movements. As there was no means at hand of securing her, 

 she was allowed to return to her nest for further ob- 



