32 FIELD KEY TO THE LAND BIRDS. 
ing South, found in summer in the fields among the 
weeds. 
76. HENSLOW’S SPARROW. Ammodramus 
henslowit. — Length, 5 inches. Head and neck green- 
ish brown, with a broad light line in the middle of 
the head; back and wings red-brown; underparts 
white and buff streaked with black ; tail-feathers nar- 
row and sharp-pointed. This is another field-sparrow, 
preferring wet meadows, where he runs mouselike in 
the grass. If obliged to take to his wings he flies 
only a short distance before he falls into the grass 
again and runs. A summer bird, wintering in the 
South. 
%%. SHARP-TAILED SPARROW. Ammo- 
dramus caudacutus. — Length, 53 inches. Greenish 
brown above, with a broad buff line over the eye and 
around the ear, which is gray; underparts white 
streaked with black with buff on sides; tail-feathers 
narrow and sharp-pointed. <A field sparrow, found in 
salt marshes near the coast. A summer bird, winter- 
ing in the South. 
There are varieties of this Sparrow: Nelson’s, the 
western species, is strong buff at the sides with hardly 
any streaks ; while the Acadian, the northern species, 
which passes us in its migrations, is cream buff at the 
sides, streaked with gray. 
98. SEASIDE SPARROW. Ammodramus mar- 
itimus. —Length, 6 inches. Grayish brown above; 
underparts grayish white, streaked indistinctly with 
gray-brown. Remarkable for his bill, which is large 
for a sparrow, and for having no red-brown on his 
back. A summer bird, living in salt marshes, more 
numerous to the southward. 
79. WHITE-CROWNED SPARROW. Zono- 
trichia leucophrys. — Length, 63 inches. Head black, 
with a white patch on the top; a broad white line 
from the eye to the back of the head, with a similar 
black one below it; neck and underparts gray, buffish 
at the sides ; upperpaits gray-brown. A winter visitor, 
