WOOD WARBLERS 417 



olive, gray, or brown, streaked with black except sometimes on rump ; wings 

 and tail dusky, wings with two white bands and greenish edgings ; inner 

 webs of two or three outer tail feathers with subterminal 

 white patches ; under parts white, chin usually black and 

 sides heavily streaked with black. Adult female in spring and 

 summer : similar, but upper parts dull olive green, streaked 

 with black ; wing bars tinged with yellow ; under parts washed 

 with pale yellowish, sides streaked with dusky. Adult male 

 in fall and winter : upper parts olive green shading- to g^ray 

 on upper tail coverts ; back and scapulars, sometimes crown 

 and rump, streaked with black ; m ing- bars usually ting-ed with yellow ; 

 superciliary olive yellowish ; throat, breast, and sides yellowish ; sides and 

 flanks indistinctly streaked: belly wliite. Young in first fall and winter: 

 like adult fall male, but under parts yellow except on under tail coverts ; 

 upper tail coverts olive green instead of gray, back less distinctly streaked. 

 Young, frst plumage : upper parts light grayish brown, streaked with black 

 except on rump, which is V)arred or mottled with black; under parts whitish, 

 tinged with olive yellow in front, and mottled with dusky ; wings and tail as 

 in winter birds. Male : length (skins) 4.t)r)-rj.51 , Aving 2.81-o.05,tail 1 .Ul-2.13. 

 Female: length (skins) 4.:)8-r).()0. wing l\7-!-2.1l5, tail 1.77-2.01. bill ..'jr)-.48. 



Distribution. — Breeds from northern New England and the Catskill 

 Mountains west to the Rocky Mountains and north to Hudson Bay and 

 Alaska : migrates west to New Mexico, Colorado, and Montana, and south 

 to northern South America, through West Indies ; not recorded from Mex- 

 ico or Central America ; accidental in Greenland. 



Nest. — On lower branches of coniferous trees, in the north often on the 

 ground ; bulky, warmly lined with feathers. Eggs : usually 4. white, 

 creamy, or butty, spotted or blotched, often wreathed with brown and lilac 

 gray. 



Food. — Insects. 



The eastern black-poll, Prof. Cooke says, comes regularly, but in 

 small numbers, west to the Rocky Mountains, occasionally being 

 common during migrations both on the plains and at the base of 

 the foothills. There is one breeding record for Seven Lakes, near 

 Manltou, Colorado, at an altitude of 11.000 feet. 



662. Dendroica blackburnise (Gmel.). Blackburnian War- 

 bler. 



Adult male in spring and summer. — Throat brillant orange yellow; rest 

 of under parts pale yellowish; sides streaked with black; 

 crown black with yellow or orange ]);itch ; superciliary yel- 

 low or orangt; ; rest of up])er j)art.s black, streaked with white ifr 

 on back ; wings with broad white patch ; tail with three outer 

 feathers white except shafts and tips. Adult ftmale : similar. Fig. 527. 

 but black replaced l»y olive brown, stieaked ; orange replaced by yellow; 

 wings and tail duller, white markings restricted. Young male in first fall 

 and winttr: like adult female, hut without yellow spot on crown; yellow 

 of throat and chest paler. Yanng fnnah in first fall and winter : similar 

 to adult female, hut upper parts i)rowner, streaks less distinct ; wliite 

 markings restricted; under parts buffy ; throat sometimes pale huffy; 

 streaks on sides dull browni.sh. Young, first plumage : upper parts brown, 

 middle of crown lighter ; back and rump indistinctly streaked ; supercil- 

 iary stripe and throat pale buffy ; chest darker, faintly spotte<.l ; rest of 



