Perching Birds Chiefly Dull Colored 



625. Yellow-green Vireo (Vireo flavoviridis}. L. 

 6.4. Resembling No. 624, but greener above, the 

 sides heavily washed with greenish yellow. 



Range. Northern South America, north to the Lower Rio Grande. 



626. Philadelphia Vireo (Vireo philadelphicus). L. 

 4.8. Ads. No distinct crown-cap; above olive-green; 

 below yellowish; a whitish line over eye; no wing-bars. 

 Notes. Resemble those of the Red-eyed Vireo but gen- 

 erally higher pitched; also a very abrupt, double-syll- 

 abled utterance with a rising inflection which comes in 

 with the song at irregular intervals. (Brewster.) 



Range, Eastern North America; breeds from Maine, New Ham- 

 shire and Manitoba northward; winters in the tropics. 



627. Warbling Vireo (Vireo gilvus}. L. 5.4; W. 

 2.8. Ads. Above grayish olive-green, crown slightly 

 grayer but without distinct cap as in No. 624; a whit- 

 ish line over eye but no black line above it; below 

 white, the sides washed with yellowish; no wing-bars. 

 Notes. Call, resembles that of the Red-eyed Vireo; 

 song; a rich, firm, unbroken warble with an alto un- 

 dertone. 



Range. Eastern United States, west to the Plains; breeds from 

 Gulf States north to Hudson Bay region; winters in Mexico. 



627a. Western Warbling Vireo (V. g. swainsoni}. 

 Similar to No. 627, but averaging smaller, W. 2.6, the 

 bill more slender; upperparts, particularly crown, 

 grayer. 



Range. Western United States, east to the Rockies; breeds from 

 Mexico to BritlshColumbia; winters in Mexico. 



631. White-eyed Vireo (Vireo noveboracensis] . L. 

 5; W. 2.4.; B. .4. Ads. Eye-ring and lores yellow; 

 iris white; above olive-green more or less washed with 

 grayish; below white, sides yellowish; two whitish 

 wing-bars. Notes. Calls, varied, often harsh and 

 scolding; song, an emphatic whistle who are you, eh? or 

 what's that you say?, and a low medley often including 

 imitations of the notes of other birds. 



Range, Eastern United States; breeds from Florida and Texas 

 north to New Hampshire and Minnesota; winters from Florida to Cen- 

 tral America. 



63 I a. Key West Vireo (If. n. maynardt). Similar 

 to No. 631, but bill heavier, sides averaging less yel- 

 low. 



Range. Southern Florida; resident. 



62 I b. Bermuda White-eyed Vireo (V. n. bermud- 

 ianus}. Similar to No. 631, but wing snorter, 2.30; no 

 yellow on sides. (Bangs and Bradlee.) 



Range. Resident In Bermudas. 



63 1 c. Small White-eyed Vireo (y. n. micrus}. 

 Smaller than No. 631, W. 2.2; averaging grayer above; 

 sides with less yellow. 



Range. Northeastern Mexico, north to southeastern Texas. 



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63/. 



