FIELD KEY TO COMMON BIRDS. SI 



ff2. Length 5'7o inches; a white line over the eye not bordered by 

 black ; prefers the upper branches of rows of ehus and otiior shade 

 trees; song, a rich, unbroken warble with an alto undertone; May 

 to Sept Warbling Vikeo, page 222. 



a3. Lungth 4-00 inchey ; nu white line over the eye; eye-ring and 

 wing-bars white; a tiny, unsuspicious bird; Hits about the outer 

 branches of trees and shrubs; wings twitched nervously; note, 

 cack\ song, a remarkably loud, musical whistle; Sept. and Oct.; 



Apl. and May Ruj;v-GUOWNEn Kinglet, page 252. 



6. Back olive-green or dusky olive ; Hycatchers who capture tlieir prey 



on the wing by darting for it, and while perching are quiet and erect. 



fii. Length 7'00 inches ; frequently found nesting under bridges or 

 about buildings; crown blackish; tail wagged ner\ously; notes, 

 pee^ pee^ Qjid. pewit~p]imbe\ Mch. to Oct. . . . Pn<EBE, page 154. 



h'^. Length 6'50 inches; hautits wooded growtlis; note, a plaintive 

 p<'e-a-wee\ May to Sept Woud Pewee, page 158. 



J3. Length 5*40 inches ; haunts orehardr^, lawns, and open woodlands ; 

 note, chehec^ chehcc Least Flvcatoher, page 156. 



c. Back gray or bluish gray. 



(^1. Length fi'oO inches ; a gray, crested bird ; forehead black ; no white 

 in tUe tail; note, a whistled peto^peto^ or hoarse de-de-de-de\ resi- 

 dent from New York city southward . . Tufted Tit, page 250. 



c^. Length 8-50 inches ; a white band at the end of the tail ; a con- 

 cealed orange-red crest; a bird of tlie air, catching its insect food 

 on tlie wing, and occasionally sallying forth from its exposed perch 

 in pursuit of a passing Crow; note, an unmusical, steely chatter; 

 JLiy to Sept Kingbird, page 150. 



d. Back brown. 



d^. Length 5-00 inches; a nervous, restless, excitable bird ; tail often 

 carried erect; song sweet, rapid and rippling, delivered with ahau- 



doa ; Apl, 25 to Oct House Wren, page 240. 



t/2. Length 12'25 inches ; slim, brownish liirds with long tails : fliLrht 

 sliort and noiseless; perch in a tree, not in an exposed position; 

 note, tut-tut^ cluch-cluch^ and co)v-c(iw\ May to Oct. 



Yellow-billed Cuckoo, Black-billed Ol'oeoo, page 132. 

 B. Back brownish, streaked. 

 a. Crown rufous or chestnut without streaks. 



ai. Length 5*25 inches; bill black; a whitish line over the eye; a 

 familiar bird of lawns and door-yards; song, a monotonous <?/; ?/»^y- 

 clnppy-c}iippy\ Apl. to Nov. . . Chipping SparFvOW, page 186. 

 a^. Length 5'70 inches; bill reddish brown, back rufous or rufous- 

 l.irown ; wing-bars and eye-ring whitish ; haunts dry, bushy ftelda 

 and pastures; song, a musical, plaintive cln:r-iv€e^ eher-wee, cJier- 

 icee, cheeo, dee-dee-dee-dee \ Apl. to Nov. Field Sparrow, page 182. 

 a^. Length 5-90 inches ; forehead black ; crown and wings chestnut- 

 rufous ; flanks pale grayish brown ; haunts marshes ; song, a rapidly 

 repeated weet-weet-wtet, etc.; Mch. to Nov. 



SwAiip Sparrow, page 180. 

 7 



