Vol. I -1 „ . , , T^ . 



No. I Birds of Princeton. 



igoi J 



birds returning year after year to the same tree. On two occasions I 

 have noticed pairs waiting for a brood of young bluebirds to become 

 fiedged, so that they could use the same cavity for their own eggs. The 

 period of their presence in this vicinity is from May i to September 5. 



loi (456). Phcebe. Sayornis phoebe {Lath.). 



This abundant summer resident makes its first appearance, singly or 

 in pairs, often as early as March 14. The nest, situated under a bridge, 

 shed, or in a quarry, is commenced about the third week in April and is 

 generally placed on or near the site of the previous one, but the same 

 nest is never used twice. Several broods are reared, both old and young 

 departing in October. 



102 (459). Olive-sided Flycatcher. Contopus bore- 

 al! s {Swains.). 



There is but one record for the occurrence of this species. Mr. Scott 

 saw one in the latter part of the seventies. He was unable to secure it. 



103 (461), Wood Pewee. Contopus virens {Linn.). 



A common summer resident breeding in woods and orchards. In 

 this locality the eggs are laid about the middle of June. The birds ar- 

 rive about May 5 and some remain as late as September 25. 



104 (463). Yellow-bellied Flycatcher. Empido- 

 nax flaviventris Baird. 



A tolerably common migrant during May, and from August i until 

 the middle of September. 



105 (465). Acadian Flycatcher. Empidonax vires- 

 cens {Vie ill.). 



A rather uncommon summer resident. I have never found the 

 eggs of this species, but on June 5, 1900, I found a newly completed 

 nest, with the birds in possession. A week later it had been abandoned. 

 The birds arrive about May 5 and remain until about September 5. 



106 (466«). Alder Flycatcher. Empidonax traillii 

 alnorum Brewst. 



The Alder Flycatcher is a regular and not uncommon migrant, 

 especially in spring. On account of its retiring habits and its similarity 



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