30S The Wilson Bulletin — No. 91 



by the bird's actions as she remained in the same tree during" 

 my twenty-minute stay, but I failed to get a gHmpse of the 

 male bird, except possibly in a meteoric flash. Several other 

 Warblers congregated in the vicinity, particularly Magnolia 

 and Myrtle, some of them protesting more vigorously than 

 the Blackburnian. These Warblers were probably feeding 

 }Oung in the vicinity as I found most of this family thus 

 engaged at this date. The dense forest second-growth in 

 which the nest was located, on the hill slope, overlooking the 

 brook, was practically devoid of undergrowth, the ground 

 being carpeted with dead needles of conifers. The opposing 

 hil] was likewise densely wooded, the intervening valley- 

 growth, mainly of Black Birch, Tamarack, and Black Spruce, 

 terminating, half a mile distant, in the aforementioned Sphag- 

 num bog. On July 13, in the dense growth of Tamarack and 

 Black Spruce encircling this bog, another nest of this species 

 was found in the top of a slender Tamarack, fifteen feet from 

 the ground, resting on a dense cluster of twigs. The female 

 was sitting on three eggs in which incubation had advanced 

 six or seven days. This bird acted as in the previous case 

 and the male was very timid, l^eing- seen only once at some 

 distance. 



Both nests were similarly constructed, though that of July 

 13 was slighter, probably owing to the situation. The other 

 nest was well out on the limb, about four feet from the trunk, 

 and was supported by a few branchlets. The composition 

 was mainlv of fine dead lichen-covered twigs of Spruce and 

 Tamarack, with a small quantity of Usnea interlarded, being 

 held together externally in a few places with balls of spiders' 

 silk. A small quantity of Usnea and black hair-like rootlets 

 composed the lining. The nests are quite distinct from those 

 of other Warblers that I have examined ; difi^en-ing from the 

 Magnolias in having a preponderance of spruce twigs and 

 no grasses : and from the Myrtles in the slighter construction 

 and lack of feather lining. They dififer in greater degree 

 with nests of all other Warblers examined. 



The eggs have some of the characteristics of those of the 



