SHARP-TAILED SPARROW. 
549. Passerherbulus caudacutus. 5°4 inches. 
Back of head greenish; sides of head, breast and 
flanks buff with black streaks; tail feathers sharp. 
Salt marshes along the seacoast or along streams 
emptying into the ocean are the dwelling places of these 
finches. They creep about like mice in the salt grass, 
now running across an open space, now threading their 
way through the upright stalks. 
Song.—A rather weak, squeaky trill. 
Nest.—Of seaweed and marsh grass, attached to the 
grass stalks several inches above ground and often cov- 
ered by a mass of dry seaweed. Eggs greenish white 
specked with brown (.78 x .56). 
Range.—Atlantic coast of the U.S. 
NELSON SPARROW. 
549a. Passerherbulus nelsoni. 5% inches. 
Similar to the last but brighter colored and _ not 
streaked below. In the Mississippi Valley north to Man- 
itoba. 549a. Acadian Sharp-tailed Sparrow (sub-vir- 
gatus), Atlantic coast, breeding from Maine to New 
Brunswick. 
