282 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Part 9. The following species have no yellow on throat er belly, and 
no white on the tail feathers: 
Wing, less than 2.25; underparts, whitish, tinged with olive on sides ; throat, with 
faint wash of yellowish buff, almost white; crown, dull olive; tail, entirely 
olive green. 
Maryland Yellowthroat. 
Geothlypis trichas (youny bird in fall). 
See No. 522. 
Wing, over 2.25: entire underparts, whitish or slightly olive; crown, slaty ; back, 
green; no yellow or orange on tail feathers. 
Tennessee Warbler. 
Helminthophila peregrina. 
See No. 493. 
Entire underparts, dull olive or olive green: crown. with partially concealed 
patch of orange brown (sometimes wanting); no yellow or orange on tail 
feathers. 
Orange=-crowned Warbler. 
Helminthophila celata. 
See No. 462. 
End of tail, brown; basal portion of. tail 
feathers, reddish orange (male), or pale 
yellow (female) ; more or less black bristles 
at base of bill. 
Redstart. 
Setophaga rusticilla. 
See No. 528. 
Part 10. The following species have no yellow on the throat or belly, 
and more or less white on the tail feathers : — 
Wing coverts, broadly edged with yellow; crown, greenish yellow; back, 
tinged with slate color; tail feathers, marked with white to the tips of inner 
webs. 
Golden=winged Warbler. 
Helminthophila chrysoptera. 
See No. 488. 
Wing coverts, not yellow; crown, grayish or greenish; back, yellowish 
green: some tail feathers, narrowly edged with white near tips of inner webs. 
Tennessee Warbler. 
Helminthophila peregrina. 
See No. 493. 
