42 FIELD KEY TO THE LAND BIRDS. 
like on tree trunks for insects in the crevices of the 
bark. 
108. WORM-EATING WARBLER. 4Helmi- 
therus vermivorus. — Length, 54 inches. Greenish 
brown above; underparts white; a black line in the 
middle of the head, one above the eye, and one from 
the eye to the back of the neck. 
109. GOLDEN-WINGED WARBLER. H#el- 
minthophila chrysoptera. — Length, 5 inches. Top of 
head and patch on wing yellow; back blue-gray; 
underparts white; a black patch on the eye and 
another on the throat. 
110. NASHVILLE WARBLER. Helmintho- 
phila ruficapilla.— Length, 4% inches. Head and 
neck blue-gray, with a small chestnut spot on the 
crown of the head; back olive-green; underparts 
yellow; no white on wings. Winters in tropics. 
411. TENNESSEE WARBLER. 4Helmintho- 
phila peregrina. — Length, 5 inches. Head and neck 
blue-gray; back olive-green; underparts, edge of 
wing, and outer tail-feathers white. Wainters in Cen- 
tral America. 
112. BLUE YELLOW-BACKED or PARULA 
WARBLER. Campsothlypis americana. — Length, 
48 inches. Head, shoulder, and tail coverts blue-gray ; 
back green; white markings on wing and outer tail- 
feathers; underparts yellow with reddish marks on 
the sides; red or black band on breast. 
113. CAPE MAY WARBLER. Dendroica 
tigrina. — Length, 5 inches. Top of head and a line 
under the eye black; cheek and ear red; back olive 
green; underparts and tail coverts yellow; a white 
patch on the wing. 
