314 MEMOIRS OF THE NUTTALL ORNITHOLOGICAL CLUB. 



that overarch even the most frequented streets. It still breeds throughout much 

 of Cambridge (including Cambridgeport), although it is decidedly less numerous 

 here now than it was before the city was invaded by House Sparrows. 



The nest of the Warbling Vireo is ordinarily built at least thirty or forty 

 feet above the ground, at the end of a long, slender branch. Silver-leaved poplars 

 are preferred to all other trees, but where these are not available the birds 

 content themselves with large, spreading white ash trees, or with elms, lindens or 

 maples, while they occasionally choose apple or even pear trees. After the 

 young take wing the adult males are usually silent for a time, but they begin 

 singing again, and with nearly their former vigor, before the end of July. They 

 are heard at frequent intervals through August and up to about the middle of 

 September when most of them depart for the south. During the latter part of 

 the summer both old and young resort to thickets of cornels (especially Comus 

 alternifolia), the berries of which they eat greedily. 



191. Vireo flavifrons Vieill. 

 Yellow-throated Vireo. 



Common summer resident. 



SEASONAL OCCURRENCE. 



May I, 1890, one seen, Belmont, W. Faxon. 



May 6 — September 10. 

 September 19, 1901, one noted singing, Arlington, W. Faxon. 



NESTING DATES. 



May 26 — June 5. 



The Yellow-throated Vireo is a common summer resident of most of the 

 wooded as well as cultivated portions of the Cambridge Region where its favorite • 

 haunts are upland woods and groves abounding in large, spreading oaks or hick- 

 ories ; old, moss-grown apple orchards ; and clusters of shade trees near farm 

 buildings. It also breeds regularly in many densely populated localities. In 

 Cambridge we continue to hear its abrupt, emphatic song in the neighborhood 

 of the College Grounds and along Brattle Street all the way from Harvard 

 Square to Mount Auburn, although here, as in most places which have become 

 similarly infested with House Sparrows, the Yellow-throated Vireo is much less 



