586 Field Museum of Natural History — Zoology, Vol. IX. 



251. Coturniculus henslowii (Aud.). 

 Henslow's Sparrow. 



Ammodramus henslowii (Aud.), A. 0. U. Check List, 1895, p. 226. 



Distr.. Eastern United States, from the Atlantic coast west to 

 the plains,'and from southern New England and southern Ontario to 

 the Gulf of Mexico; breeds from Kentucky, Illinois, and Missouri 

 northward. 



Adult: Greater portion of head and nape, dull olive green; crown, 

 black, with olive green stripe in centre; feathers of the back, rufous 



Tail and bill. Henslow's Sparrow. 



brown, with black centres, and narrowly edged with ashy white; 

 throat, whitish or buffy white; breast, pale buff, streaked with black; 

 belly, dull white ; sides of body, buff, streaked with black; tail feathers, 

 narrow and pointed, the two middle feathers, rufous brown, with a 

 dark brown streak in the centre bordering the shafts. 



Length, 5, or less; wing, 2.15; tail, 2; bill, .36. 



This species is a rather common summer resident in suitable 

 localities in Illinois and Wisconsin, arriving the latter part of April 

 and leaving for the south early in October. Frequents open prairies, 

 fields, and marshes. 



Breeds in May and June. The nest is placed on the ground, and 

 is composed of dry grass, often lined with fine grass or hair. The 

 eggs are grayish white, thickly spotted and speckled with light 

 rufous brown, from 4 to 5 in number, and measure about .76 x .57 

 inches. 



252. Coturniculus leconteii (Aud.). 

 Leconte's Sparrow. 



Ammodramus leconteii (Aud.), A. 0. U. Check List, 1895, p. 227. 

 Distr. : From the Great Plains eastward to Illinois, Indiana, and 

 Kentucky, and from Manitoba to the Carolinas, Florida, and Texas 



