WARBLERS 483 



a*. No line of buffy bordered by black present through crown 

 or over eye. 

 b'. Outer tail feathers shortest; legs lightish or flesh color. 



Northern Yellow Throat, (female and immature). 

 b'. Outer tail feathers equal in length to others ; legs blackish. 

 Orange-crowned Warbler. (Hypothetical List). 

 §§. Tail blotched or spotted with yellow or white. 

 ?. Wings with white or grayish white bars, 

 a^ Under parts buffy tinged; back olive green and usually 



streaked with black. Bay-breasted Warbler, (immature), 

 a''. Under parts not buffy tinged, either white or whitish, 

 b'. Back streaked with black and white only. Black and 



White Warbler, (female). 

 b*. Back not streaked with black and white, 

 c'. Back grayish green; grayish wing bars; white ring 



around eye. Pine Warbler, (female and immature), 

 c*. Back greenish yellow; cheeks gray; Chestnut-sided 

 Warbler, (immature). 

 ??. No white or grayish white wing bars present, 

 a^ Back and head brownish : yellow band on wings at base of 

 primaries, and yellow at base of tail. American Redstart, 

 (female and immatiu'e). 

 a^. Back and head greenish or yellow, 

 b'. Head grayish, contrasted to bright green back; small dark 



spot before the eye. Tennessee Warbler, (male). 

 b^ Head not grayish, but either greenish yellow or yellowish 

 green, 

 c'. Under parts pure white. Chestnut-sided Warbler, ( imma- 

 ture). 

 c'''. Under parts yellowish, inner margin of feathers of tail 

 yellow. Yellow Warbler, (immature). 

 2. Throat, breast and belly 7iot white, whitish or buffy white. 

 §. Throat yellowish, yellow or orange colored. 

 ?. White bars on wing, 

 a'. Throat yellow, belly whitish, different in color, 

 b'. Back bluish with yellow central blotch or patch. Northern 



Parula Warbler, 

 b^. Back olive green. Pine Warbler, 

 a*. Throat and belly same color, 

 b'. Whole of under parts strongly yellow. Magnolia Warbler, 



(immatiire). 

 b*. Under parts at most buffy or yellowish, 

 c'. Back not streaked with black. Pine Warbler, (female), 

 c^. Back streaked with black at least slightly. 



