\‘Iltlios. 327 
     
     consist of aseries of guttural gnrgles, squeaky whistles, and shrill pipes, 
     
     some of which might be attributed to the creaking,r weather vanes he 
     
     so often chooses as a pereh. 
     
    
   
   
    
     FAMILY VIREONIDE. VIREos. 
     
    
   
   
    
     The Virecs, numbering about fifty speeies. are peculiar to America, 
     
     most, of them being confined to ('entral and South Ameriez. Some 
     
     til'teen species, all belonging to the genus Vireo, reach the United 
     
     States. 
     
    

    
     Vireos are for the most part arboreal, though several species haunt; 
     
     the lower, rather than the higher growth. For small, insect-eating 
     
    

    
     l birds they are rather slow in their movements. We do not see them 
     
     darting out after insects as do the lr‘lyeatehers. nor do they tlit through 
     
     the foliage after the manner of many Warblers, but patiently glean 
     
     their food from the under surfaces of leaves. creviees in the bark. etc. 
     
     They are more musical than the small \Varblers; all our species have 
     
     pleasing:r songs, and seine of them are especially gifted. 
     
     KEY TO THE SPEt'IES. 
     
     A. With distinct white or yellowish white wing—bars. 
     
     a. Eyerring. or line from eye to bill, yellow. 
     
     a1. Throat, and breast bright yellow ; rump gray. 
     
     625s. Y1-1].LOW—THROATEI)VIIKEO. 
     
     (17. Under parts white or whitish: sides and sometimes breast washed 
     
     with greenish yellow; rump olive-green. 
     
     1:31. \\'nrri;~i-:vi»:n Vimn). 631d. KEY WEST Viiaho. 
     
     b. Eye-ring and line from eye to bill white. 
     
     [11. Head lead-blue; win;r over 2‘7)”. 
     
     629. BLri-I—mcwmcn \‘inico. 021m. MOUNTAIN VIREO. 
     
     lfl. Head grayish. nearly like lHlt'k, wing under 2'50. 
     
     63:3. Blair’s "mice (Illinois). 
     
     1)’. Without white \\'in\_rrluars. 
     
     (1. Under parts yellowish ; tirst prinmry as long as tit'th. 
     
     Git}. l’iiii..\nr:Li-iim Yuma). 
     
     1). Under parts white; xii/t.»- washed with yellowish; first primary '7?) long. 
     
    
   
   
    
     a. Under parts white. with little it' any yellowish on sides; head with a 
     
     lead~gray cap. bordered by 1 irruw hlaek lines over the eye. 
     
     024. RiciH—Lvicn Vimzo. 62:}. Braex-wnmanual) Vnum. 
     
    
   
   
    
     i 
     
     i 
     
     l 
     
     l 
     
     l 
     
     i 
     
     E 1:27, Wannmxu Vim-:0. 
     
     | 
     
     i 
     
     l 
     
     l 623. Vireo calidris barbatulus (I'd/1f). ii..\t'K—wiiisKI-ziucn 
     
     l Vimco. Ail: Similar to the next speeies, but somewhat duller above and 
     
     E with a t'useons streak on either side of the throat. 
     
    

    
     l [idiopa—t'ulva, Bahamas, and southern Florida; southward to Central 
     
     i America in winter. 
     
    

    
     ‘ Jew-t, pensile, of dry grasses. shreds of bark, cotton, lit-hens, and spiders” 
     
    
   
   
    
     i wuh, lined with suit. eottonlilie fibers, suspended from a forked branch. five