98 



KEY AND DESCBIPTION 



1. Black-whiskered Vireo (623. Vireo calldris barbdtulus). — 

 A species found in southern Florida, West Indies, and south, in 

 winter to Central America. It is very much like the next 

 species, but has a narrow dusky streak extending from the bill, 

 below the eyes, along the side of the throat. 



Length, 5| ; wing, 3| (-3-31) ; tail, 2^ ; culaien, f. 



J 2. Red-eyed Vireo (624. Vireo olivd,ceus). — A very common, 

 small, olive-green-backed, white-bellied vireo, with a black-mar- 

 gined slaty-gray crown, white line over the eye, and no wing 

 bars. The dark border to the crown gives emphasis to the 



white line over its 

 red eye. This com- 

 mon inhabitant of 

 trees has been called 

 the preacher, because 

 of its tireless singing. 

 In the words of Wil- 

 son Flagg, "We might 

 suppose him to be re- 

 peating moderately, 

 with a pause between 

 each sentence, ' You see it — you know it — do you hear me ? 

 — do you believe it ? ' All these strains are delivered with 

 the rising inflection at the close, and with a pause, as if wait- 

 ing for an answer." 



Length, 61 ; wing, 3J- (3-3|) ; tail, 2} ; tarsus, f ; culmen, f . North 

 America, from Utah eastward ; breeding from the Gulf States to Hudson 

 Bay, and wintering from Florida to South America. 



3. Yellow-green Vireo (625. Vireo flavoviridis). — A vireo of 

 western Texas and southward to Peru ; very mvich like the last 

 species, but with the under parts, especially the sides, flanks, 

 and under tail coverts, much more brightly yellow. 



Length, 6J ; wing, 3 (2|-3^) ; tail, 2J; culmen, |. 



4. Philadelphia Vireo (626. Vireo philadilpMcus). — A small, 

 light, olive-green-backed, grayish-crowned vireo with all under 



Ked-eyed Vireo 



