BIRDS OF EAST PENNSYLVANIA. 



13 



White-bellied Swallow. 

 Sand Martin. . . . 



Eough-winged Swallow. 



Purple Martin. . . . 

 Tyrant Plycatclier. 



Great Crested Flycatcher 

 Pewee Flycatcher. . . 



Olive-sided Flycatcher. 

 Wood Pewee, . . . 

 Traill's Flycatcher. . 



Hirundo bicolor. Rather plentiful. 

 Comes late in March, and leaves 

 early in September. (S.) 

 Coti/le riparia. Bank Swallow. Not 

 uncommon on the high bank of a 

 river or the sea-shore, arriving 

 early in March, and leaving about 

 the middle of October. (S.) 



Coti/le serripennis. This is a southern 

 species, and not rare. It arrives 

 early in April, and seems to be more 

 abundant in the lower counties. (S.) 



Progne subis. Abundant, coming early 

 in April, and leaving in the end of 

 August. (S.) 



Tyrannus CaroUnensis. King Bird. 

 Field Martin. Bee Bird. Plentiful. 

 It arrives about the end of April, 

 and leaves in September. (S.) 

 . Myiarchus crinitus. Not uncommon, 

 appearing early in May, and leaving 

 in the end of September. (S.) 



Sayornis fuscus. Pewee. Phcebe 

 Bird. Eather plentiful, especially 

 on the borders of creeks and small 

 streams. It appears early in March, 

 and leaves in November. (S.) 



Contopus horealis. Very rare. It is 

 generally seen early in May on its 

 way north, and returns in September. 

 (S. & A.) 



Contopus virens. Not uncommon from 

 the beginning of May to the middle 

 of September. This species closely 

 resembles the Phcebe Bird. (S.) 



Empidonax Traillii Eare, but some 

 seasons it is not uncommon in the 

 Spring, arriving about the middle of 

 May. (S. & A.) 



