100 



ter county, Pa. (Stone), January 22, 1883, Chester county. Pa. 

 ( Warren). 



203. Contojyus borealis (Swaixs.) Olive-sided Fly- 

 catcher. 



Breeding Range— Canadian Zone northward (southward in the 



mountains). 

 Winter Distribution — Mexico and northern S. A. * 



Very rare migi-ant. One specimen was taken by Prof. Baird at 

 Carlisle many years ago (Birds of Car/isle), and another by Mr. C. D. 

 Wood at Coatesville, Pa,, about 1875 (Trotter— B. N. 0. C, 1879). 

 Dr. Warren states that several have been taken at rare intervals in the 

 southeastern portion of Pennsylvania during the past ten or fifteen 

 years. The species has not been observed in the Delaware Valley by 

 any members of the Club. 



206. Confopns virens (Li^s.). Wood Pe wee. 



Breeding Range — Eastern U. S., northward to Canada. 

 Winter Distribution — Eastern Mexico and Guatemala. 



Abundant summer resident. May 6-September 20. 



207* JEmpidonax flaviventris Baird. Yellow-bellied 



Flycatcher. 



Breeding Range — Northern border of U. S., northward ; westward to 



Rocky Mts. 

 Winter Distribution — Eastern Me.\ico to Panama. 



Rather rare migrant in southeastern Pennsylvania and New 

 Jersey, occurring in spring, May 17-21, and in fall, September 4-25. 



Along the higlier portions of the Alleghanies it is probably a regu- 

 lar breeder, as Mr, Dwight found it on Nortii Mountain in summer 

 (Auk, 1892), and Mr. Koch reports it as breeding in Lycoming 

 county, Pa. 



208. Bmpidonajc acadicus (Gmel.). Acadian Fly- 

 catcher. 



Breeding Range — Eastern U. S., northward to the upper limit of the 



Carolinian Zone. 

 Winter Distribution — Eastern Mexico to Ecuador. 



■Common summer resident throughout southeastern Pennsylvania 



