Perching Birds Chiefly Dull Colored 



629. Blue-headed Vireo (KiVeo solilariui). L. 5.5; 

 vV. 2.9; B, ,4. y^cls. Lores anJ eye-rinj; wliite;crown 

 ind cheeks bluish slate-coior; back olive-greei.; below 

 white, sides washed with greenish yellow; two whitish 

 iving-bars. Nolei. Resembling in form those of Red- 

 eyed or Yellow-throated Vireos but more varied, some- 

 times acontinuous warble; a musical chatter, like that of 

 the Yellow -throated and a trilled whistle. (Torrey. ) 



Range. — Lastein Norlh America; bieuJs from Cunnectlcut (and 

 south alone Alleehanies) north (o New Brunswick and ManltoBa; 

 wlnler^from Florida to Central America. 



e29a. Cassin Vireo (K s. cassini). Like No. 639, 



but back washed with the color of the head; white nn 

 breast and throat less pure. 



Range.— "Breeds from Brlilsh Columbia ana Idaho south along Pa- 

 cific coast region and Nevada to Lower California; migrates to Arizona, 

 New MejsiLo; and Liortheni Me;(i*:o." (Bailey.) 



629b. Plumbeous Vireo {K .?. plumbms). Above 

 wholly plumbeous-gray with scarcely, if any, olive 

 tinge, below white, the sides gray /fl(K«j' tinged with 

 greenish yellow; size, of No. 629c. 



R^nge— Rocky IHoimaln rpglon; hrppits from northern Mexico 

 norlli to .southwestern Dakota and Wyoming; winters south lo south-' 

 ern Mexico, 



629c. Mountain Solitary Vireo (K. s. allKola). 

 Larger than No. 629, W. }.i5, B. .46; head darker, its 

 colnr extending over rnost of the hack. 



Ringe. — Rrepd^in Alipghanlps from North Camllna to Georgia; 

 winters in Florida. 



629d. St. Lucas Solitary Vireo (K. ». lucasaam). 

 SiTialler thai. No. 629a, but bill longer and stouter, 

 sidrf and flanlis much yellower; young without 

 brownish hebw, and resembling young of No. 620. 



Range.— Capp Rpglon of l.owpr California. 



633. BeJl Vireo {VirsoMlii). L. 5, Above olive- 

 green. Crown grayer; lofeS and eye-ring white; two in- 

 conspicuous whitish twing bars; below white, sides 

 tinged with yellowish. Most like No. 627, but back 

 greener, no white lin? hack of eye. Notss. Resemble 

 those of the White-eyed Vireo, but less harsh, song 

 less emphatic. (Goss.) 



Ran^e. Interior states from Illinois west to Plains: brer.ds frora 

 Texas to Minnesota: witters In Mexico. 



633.1. Least Vireo iVireo puMllus). L. 4.8. Adi. 

 Above gray, slightly tinged with greenish toward rump; 

 bi-loA' white, sides with little if any greenish tinge; 

 one inconspicuous Whitish wing-bar; lores and eye- 

 ring inconspicuously grayish. 



Ranga. — Northwestern Mexico and northern Lower CaHfomiaj 

 breeds north to Arizona and middle California. 



634. Gray Vireo {l^inonidnior). L. 5.5. Above 

 slaty gray; below white tinged with grayish; one in- 

 conspicuons wing-har; lores and eye-ring gray; bill 

 short. Notss. Song may be compared with the finest 

 efforts of the Blue-headed Vireo with the added charm 

 and mellowness of the song of the Yellow-throated 

 Vireo. (Henshaw.) 



Range.— Northern Mexico, north to western Texas, soutlWftsteni 

 California, and southern Nevada; winters in Mexico. 



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