consist of a series of guttural Burgles, squeaky whistles, and shrill |>i(H>s, 

 some of which might lie attributed to tin- creaking weather vanes he 

 BO often chooses as pcn-h. 



FAMILY YIUKONIDJC. YHUOOB. 



The Vire<.s, numU'riiij; alxuit fifty sjM-cies. arc jMculiar to America, 

 most of them U'itij; routined tiiCciitnil ami S.iilli AnuTicii. Some 

 fifteen species, all belonging to the genus Vireo, reach the United 

 States. 



Vireos are for the most |wrt arboreal, though several species haunt 

 the lower, rather than the higher growth. For small, insect-eating 

 birds they are rather slow in their movements. We do not see them 

 darting out after insects as do the Flycatchers, nor do they flit through 

 the foliage after the manner of many Warblers, but patiently glean 

 ttieir food from the under surfaces of leaves, crevices in the bark, etc. 

 They are more musical (him Die -mall Warblers; all our species hare 

 pleasing songs, and some of them are especially gifted. 



KEY TO THE SPECIES. 



A. With .H-.iin.-t white or yellowish white wing- ham. 



a. Eye-ring, or line from eye to hill, yellow. 



a 1 . Throat aiul breast bright yellow ; rump gray. 



028. YELLOW-THROATED VIREO. 



aft. Under part* white or whitish ; si<let and sometimes breast washed 

 with greenish yellow ; rump olive-green. 



631. WHITE-EYED VIREO. 631a. KEY WEST VIREO. 



b. Eye-ring and line fnnn eye to hill white. 

 6. Head lead-blue; wing over 8*60. 



629. BU-K-IU \nn. YIKEO. 629a. MorxTAiN VIREO. 

 A*. Head grayish, nearly like hack; wing under 2-. r n>. 



633. BELL'S VIREO (Illinois). 

 R. Without white wing-bam. 



a. Under parts yellowmh ; first primary as long as fifth. 



626. PHILADELPHIA VIREO. 



6. Under parU white; ride* washed with yellowish ; first primary -75 long. 



627. WARBLINO VIREO. 



e. Under parto white, with little if any yellowish on sides ; head witJi a 

 lead-gray cap. Uinlen-il Ky narrow black lines over the eye. 



UKI>-I:VF.H VIRKO. 623. HLACK-WHIDKERED VIREO. 



623. Vireo calidris barbatuluc (Cab.). BLACK-WHIIKKRKD 



VIREO. .!!. Siniilur t-. the ne\t sjH-fies, Lut vmewhat .luller above and 

 it)i * ("memi* Htn*ak on either .-.'ule oftlie throat. 



Jianye. Cuba, Bahaman, and southern Florida; southward to Central 

 i in winter. 



.Y<, pcnailc, of dry gramea, ahred* of bark, cotton, lichens, and uppers' 

 web, lined with oft, cottoolike flbon, >utpnd)d from a forked branch, five 



