V. FLAVIFRONS : YELLOW-THROATED GREENLET. 20I 



growth of any kind ; though it enters orchards and 

 gardens, particularly when the fruit-trees are in blos- 

 som. The nest, as would be expected, is built at a 

 considerable height from the ground. It is pensile, of 

 course, and pecu- 



liar in no respect 



in comparison with 



that of other Vireos ; 



nor are the eggs 



distinguishable with 



certainty from the 



Red-eye's, though 



averaging smaller. 



They are usually laid early in June. Dr. Brewer has 



recently recorded no fewer than four nests and sets of 



eggs from East Bethel, Vt., in the very heart of the 



Green Mountains, and seems disposed to consider the 



bird as not less abundant there than in Massachusetts 



and Connecticut. 



Fig. 49. 



■Details of Structure of Warbling 

 Greenlet. (Natural size.) 



YELLOW-THROATED GREENLET. 



VlREO FLAVIFRONS V. 



Chars. A large, stout, highly-colored species, with thicker bill 

 than any of the foregoing. No evident spurious first quill ; pri- 

 maries apparently only 9, as in olivaceiis and pJiiladelpliicus. 

 Above, rich yellow-olive shading to bluish-ash on the rump ; 

 below, bright yellow, the belly and vent abruptly white, the sides 

 shaded anteriorly with olive, posteriorly with plumbeous. Ex- 

 treme forehead, supraciliary line, and eye-ring, yellow like the 

 throat. Lore dusky ; wings dusky, with much white edging and 

 two broad white cross-bars ; tail like wings, the feathers broadly 

 edged with white. Bill and feet dark plumbeous. Length, 5.75- 

 6.00 ; extent, 8.50 ; wing about 3.00 ; tail only 2.25 ; bill, 0.45 ; 

 tarsus, 0.75. 



