584 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Genus PASSERCULUS Bonap. 



249. Passerculus sandwichensis savanna (WiLS.). 

 SAVANNA SPARROW. 



Ammodramus sandwichensis savanna (Wils.), A. O. U. Check List, 

 1895, p. 224. 



Distr. : Eastern North America, from Dakota and Nebraska to 

 the Atlantic coast and from Labrador and Ungava south to the Gulf 

 of Mexico, Florida, Cuba, and Yucatan; breeds from Illinois, Wiscon- 

 sin, and Pennsylvania northward to limit of its range (Cape Eskimo, 

 Ungava, Labrador, etc.). 



Adult: A superciliary line and bend of the wing, pale yellow, 

 on the latter so pale at times as to be hardly noticeable; all tail 



Savanna Sparrow. 



feathers, dark grayish brown and rather pointed; upper plumage, 

 streaked, mixed black, ashy and pale rufous brown; under parts, 

 white, streaked on breast and sides with brownish black; belly, gener- 

 ally without streaks; wings, dark slaty brown, the coverts and inner 

 secondaries, brownish black, edged with pale rufous brown. 



Length, 5.60; wing, 2.65; tail, 2.15; bill, .38. 



The Savanna Sparrow is a common summer resident in northern 

 Illinois and Wisconsin, from April until October. Frequents fields 

 and prairies. A few remain in southern Illinois during the winter. 



The note is a faint trill preceded by peculiar rasping sounds some- 

 what resembling those of the Grasshopper Sparrow. 



