136 THE CHICAGO ACADEMY OF SCIENCES. 



The range of this species covers the eastern United States 

 from southern Canada southward, in winter to the southern 

 states, eastern Mexico, and south to Costa Rica. It breeds 

 throughout its range excepting in the more southern portions. 



Genus AMMODRAMUS Swainson. 1827. 



Ammodramus henslowii (Audubon). Henslow's Sparrow. 



Emberiza henslowii AUDUBON, On. Biog., I, 1831, 360, pi. 77. 

 Coturniculus henslowi BONAPARTE, Geog. and Oomp. List, 1838, 32. 

 Ammodromus henslowi GRAY, Gen. B., II, June, 1849, 374. 

 Popular synonym : HENSLOW'S BUNTING. 



Henslow's Sparrow is a not uncommon summer resident, 

 arriving about the middle of April and departing by the last of 

 September. 



The range of this species covers the eastern United States, 

 west to the Plains, breeding as far north as Massachusetts and 

 northern Illinois and wintering in the southern states. 



Ammodramus leconteii (Audubon). Leconte's Sparrow. 



Emleriza leconteii AUDUBON, B. Amer., VII, 1843, 338, pi. 488. 

 Coturniculus lecontii BONAPARTE, Consp. Av., I, 1850, 481. 

 Ammodromus leconteii GRAY, Gen. B., II, .June, 1849, 374. 

 Popular synonym : LECONTE'S BUNTING. 



Leconte's Sparrow is a rare migrant within our limits. It 

 arrives about the middle of April, and returns in the fall in 

 September. Regarding this species, Mr. E. W. Nelson says:* 

 "I obtained a fine specimen May 13, 1875, at Riverdale, Illinois, 

 and by my notes I see that a second specimen was observed the 

 2ist of the same month near where the first was obtained. The 

 specimen in my possession was flushed from a small depression 

 in the prairie near the Calumet River, where the moisture had 

 caused an early growth of coarse grass, about three inches in 

 height. After darting off in an erratic course a few rods, it 

 suddenly turned, and alighting ran rapidly through the grass, 

 from which it was with difficulty started again and secured." 

 In a similar habitat and on the Desplaines River at Worth, Mr. 

 Eliot Blackwelder and myself have observed a number of these 

 Sparrows each spring. Mr. Blackwelder also saw them at the 

 same place on September 16, 1896. Mr. B. T. Gault saw this 

 Sparrow in Du Page County on September n, 1894. A male 



*Birds of Northeastern Illinois, Bull, of the Essex Institute, Vol. VIII, 1876, 107. 



