BIRDS OF THE CAMBRIDGE REGION. 



315 



numerously represented now than it was twenty-five or thirty years ago. In late 

 summer, when it indulges, like the Warbling Vireo, in renewed and vigorous sing- 

 ing, after a rather protracted inter\-al of almost total silence, it may often be 

 met with in extensive tracts of woodland, associating with Chickadees and with 

 migrating Warblers of various kinds. Most of our Yellow-throated Vireos leave 

 for the south before the first of September and the last stragglers rarely linger 

 later than the middle of that month. 



192. Vireo solitarius (Wils.). 

 Blue-headed Vireo. Solitary Vireo. 



Not uncommon transient visitor and rare summer resident. 



SEASONAL OCCURRENCE. 



April 14, 1890, one seen near Prospect Hill, Waltham, W. Faxon. 



April 20 — May 8. (Summer.) 

 May 13, 1875, one ad. male' taken, Belmont, \V. Brewster. 



September 11, 18S0, one male-' taken, Cambridge, H. M. Spelman. 



September 1 5 — October 5. 

 October 1 1, 1870, one im. female^ taken, Watertown, W. Brewster. 



NESTING DATES. 



May 28 — June 20. 



In respect to one of its characteristics the Solitary Vireo is aptly named, 

 for it loves to haunt deep and solitary woods, preferring those which shade remote 

 glens and rocky hillsides and which are made up largely of evergreen trees, 

 especially hemlocks and white pines. It is not, however, an unsocial bird, for it 

 may often be found, at least in autumn, in company with Chickadees and various 

 species of Warblers. We used to meet with it rather frequently, at its seasons 

 of migration, in the cedar and pitch pine groves immediately to the westward 

 of Mount Auburn as well as in most of the wooded swamps near Fresh Pond, 

 and it continues to appear in the wilder parts of Arlington, Belmont, Lexington 

 and Waltham, where it occasionally passes the summer. Like the Bluebird it 



1 No. 105, collection of William Brewster. 



2 No. 339, collection of H. M. .Spelman. 



' No. 3278, collection of William Brewster. 



