26 HOW TO NAME THE BIRDS 



20. ROUGH-WINGED SWALLOW. 



Dull brown Whitish. 



5. Darker across breast ; differs from bank swallow in 



having a series of hooks on outer web of first wing-feather, 



serrate in appearance, invisible at distance. 



Nest, not in sand-bank, but in cavities of fence, house, and the like ; 

 eggs, 4-6, pure white ; apparently rare. 



* * * Nos. 21-29: Above ^ sojnewhat olivaceous. 



21. OLIVE-SIDED FLYCATCHER. 



Dark olive-brown Whitish, streaked. 



lYz' Upper mandible, black; lower, yellowish ; crown- 

 feathers, erectile and darker ; wings and tail, darker ; tail, 

 emarginate ; below, breast peculiarly streaked with olive- 

 brown tint ; remainder, including middle line of breast, 

 white or yellowish. 



Breeds from Conn, northward ; nest, unpretentious, at quite a dis- 

 tance from ground ; eggs, early in June, 5, white, or whitish, spotted. 



22. PHCEBE. 



Dull olive-brown Whitish. 



7. Bill, all black ; crown-feathers, erectile and darker; tail, 



emarginate ; below, white, clouded with tint of upper side. 



Quite generally distributed ; nest, under eaves, and in similar 

 places, prettily made of grass and mud, stuccoed with moss, and 

 lined ; often 3 broods ; eggs, early in May, 5, usually pure white ; 

 constantly flirts tail; an early spring arrival. 



23. PEWEE. 



Olive-brown Light ash. 



6-6X- Wings and tail, darker ; see 51. 



