V. FLAVIFRONS .' YELLOW-THROATED GREENLET. 2OI 



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 olivaceus and philadelphicus. 

 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. 



