152 LANGUID VIREOS. 



white-eye, sometimes so much so as to become quite rudimentary, as in the 

 solitary ; in some species it becomes very minute and is misplaced, appear- 

 ing on the upper side of the edge of the wing, as seen in the red-eye. 



While the vireos differ considerably from the warblers in form of feet, 

 size of head, and size and form of bill ( see fig. 70, pine warbler, and con- 

 trast with fig. 75, warbling vireo ), they are closely allied to the shrikes, re- 

 sembling this group in having the large head and large bill with its hooked 

 tip. See fig. 69, logger^head shrike. 



GROUP ONE. ENERGETIC VIREOS. 



Wing bands, present. Song, divided into a decided, 

 separate series of notes and uttered with considerable force, 

 but with comparatively harshness. Movements, energetic. 

 Three species. 



GROUP TWO. LANGUID VIREOS. 



Wing bands, absent. Song, not divided into a decid- 

 ed, separate series of notes and not given with special force, 

 but very sweetly. Movements, rather languid. Three 

 species. 



Fig. 71. 



Sead of "?ell6w-tiir6aied Vireoi 



GROUP ONE. 



1 Yellow- throated Vireo. Greenish above, quite uniform. Throat and 

 tipper breast, bright yellow. Remaining under parts* white. Wing bands, 

 White* 



