436 
WOOD WARBLERS 
A Field Key to the 
Adult Male Warblers of Eastern North America in 
Spring and Summer Plumage. 
I. Throat yellow, white, or whitish ; underparts without streaks or patches. 
II. Throat black, brown, or slate-color. 
III. Throat yellow or orange, underparts with streaks. (In one species a 
blackish brown band across the breast.) 
IV. Throat white or whitish, with streaks or spots on the underparts. (In 
two species a yellow patch on the sides of the breast.) 
Se Throat yellow, white, or whitish; underparts without streaks 
or patches. 
1, Throat yellow. 
A. Length over 6'00, the largest of the Warblers; haunts dense thick- 
ets in second growth; song, a peculiar mixture of whistles, chucks , 
and crow-calls, delivered from the undergrowth, from the trees 
above, or on the wing, when the bird resembles a bunch of falling 
leaves 683. Yellow-breasted Chat. 
B. Length under 6*00. 
a. Head and neck bright golden yellow like the breast; tail-feathers 
white, except at the tip; haunts near the water; especially low 
bushes and willows hanging over streams and ponds; call, a 
sharp peek; range, from Virginia and s. Minnesota southward. 
637. Prothonotary Warbler. 
h . Forehead and cheeks black, a yellow line over the eye; song, a 
loud whistled call of five to seven notes ; haunts near the ground ; 
range from lower Hudson valley southward. 
677. Kentucky Warbler. 
c. Forehead and cheeks black, bordered by grayish; no line over 
the eye; haunts undergrowth; call, a frequently repeated chack; 
song, a loud, rapid I beseech you, I beseech you, I beseech you, or 
witch-e-wee-o , witch-e-wee-o, witch-e-wee-o; movements restless; 
abundant 681. Maryland Yellow-throat. 
6816. ^Florida Yellow-throat. 
d. Head and back olive-green; wings with two white bars; outer 
tail-feathers with white; haunts pine woods; song, a musical trill. 
671. Pine Warbler. 
e. Crown bluish ash, eye-ring white; call-note sometimes like the 
sound produced by striking two pebbles together. 
645. Nashville Warbler. 
/. Forehead yellow, a small black mark in front of the eye; wings 
with two white bars ; outer tail-feathers with white ; song, swee-chee , 
the first note higher, and also wee , chi-chi-chi-chi, chur, chee-chtir. 
641. Blue-winged Warbler. 
g. Forehead yellow; crown-cap black; cheeks yellow; wings and 
tail unmarked; rather rare . . . 685. Wilson’s Warbler. 
2. Throat white or whitish. 
A. Length 5*00; crown brown or with blackish and buffy stripes. 
а. A conspicuous whitish line through the center of the crown, bor- 
dered by black lines; not common. 
639. Worm-eating Warbler. 
б. Crown plain brown; range, Virginia and southward. 
638. Swainson’s Warbler. 
B. Length 4*50; crown ashy or forehead yellow. 
a. Forehead yellow. 
a 1 . Breast white, with a barely perceptible tinge of yellow; wing- 
bars white or yellow, a black mark in front of the eye; rare. 
641x642. Brewster’s Warbler. 
