48 JOURNAL OF MAINE ORNITHOLOGICAL .SOCIETY. 



large and contained four white eggs. The rufous spots were col- 

 lected either in a ring around the larger end or on the crown. One 

 egg was almost spotless on the sides. The bird called "cheh" once. 



The following morning the female was again incubating. I did 

 not disturb her. 



The third day she was still incubating. She left the nest after 

 I had lingered for some time. At first she trusted to her coloration, 

 but when she knew that I saw her, she left the nest in the same 

 manner as before. 



On the fourth day the eggs were gone. 



The outside of the nest was composed of dead poplar leaves, 

 with the addition of a few dwarf cornel leaves, and the inner bark 

 fibre of such young, dead trees as poplar, soft maple, and willow, a 

 few white pine needles, a few decayed fern stipes, and several skele- 

 tonized leaves. The lining consisted of more minute threads of the 

 inner bark fibre, and a few black horsehairs. Aside from the large, 

 dry leaves on the outside, the material was fine. It must have taken 

 a great deal of time to gather it. The nest was deeply cupped and 

 the interior well shaped. It was placed between a moss-covered 

 stump and the roots of a gray birch. When the gray bird was sit- 

 ting, the nest was quite indistinguishable. The fact that the cavity 

 was natural may have tended to make the nest less conspicuous. 



The Canada Warbler has a tendency to keep low down in a 

 thicket, where from a perch on a dead branch it has perfect freedom 

 to catch insects on the wing. Frequently, however, it feeds in the 

 treetops. 



The tone quality of its song suggests that of the Winter Wren. 

 It is liquid, bubbling, sparkling, clear, and irresistible. To me it is 

 one of the most beautiful of Warbler songs. 



These are some of the Canada Warbler's songs as they sound 

 to me. 



"Tit, tit, who is it?" 

 "Co, chit-u-it, chit-u-it." 

 "Chee, chit-u-it, chit-u-it." 

 "Chee, chit-u-it, wee, chit-u." 



