7 8 BIRDS OF MASSACHUSETTS 



visitor." Wellesley: " A very rare or accidental fall and winter visit- 

 ant." Sherborn. 



210. Empidonax flaviventris Baird. YELLOW-BELLIED 

 FLYCATCHER. 



An uncommon, if not rare spring and autumn migrant. 



(May 10) May 15 to June 10 ; August 25 to September 10; 

 (November 29 at Reading, December 21 at Newton 1 ). 



Amherst: "Uncommon migrant."" Berkshire: "Rare spring and 

 (presumably) autumn transient visitant. 1 ' Brookline : " One record, 

 May 10." Cambridge : Transient visitant, sometimes rather common. 

 Cohasset : " Occasional." Springfield : " Tolerably common spring and 

 autumn visitant." Templeton : " Rare during the migrations." Welles- 

 ley : " Scarce migrant." 



211. Empidonax virescens (Vieill.). GREEN-CRESTED FLY- 

 CATCHER. 



An accidental summer resident. One instance: Hyde Park, 

 a " nest and three eggs were taken" in June, 1888, by Mr. Fred. 

 W. Hill. This nest, with one of the parent birds is now in the 

 collection of Mr. William Brewster. 2 



212. Empidonax traillii alnorum Brewst. ALDER FLY- 

 CATCHER. 



A spring and autumn migrant and summer resident, common in 

 the western and higher portions of the State, but rare and local 

 in Eastern Massachusetts, where it has been known to breed at 

 Lynnfield, and has been found in summer at Purgatory Swamp in 

 Norwood. 



May 1 6 to June i ; Summer ; to August 24. 



Amherst : " Uncommon migrant, and possible breeder." Berkshire : 

 " Common summer resident." Cambridge : Rare transient visitant. 

 Springfield : " Rare summer /resident .... in extreme western part of 

 Hampden and Hampshire Counties." Wellesley : " Rare migrant." 



213. Empidonax minimus Baird. LEAST FLYCATCHER. 

 A common, if not abundant, summer resident. 



1 Allen; Bull. Nutt. Orn. Club, Vol. Ill, No. 2, Apr., 1878, pp. 101, 102. 



2 Editor; O. & O., Vol. XIII, No. 10, Oct., 1888, p. 160, and Brewster ; 

 Minot's Land Game Birds, 2nd ed., 1895, p. 300. 



