142 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



[6327, R 188, C 221, U 537.] 

 Calcarius pictus (Swains.). Smith's Longspun Migratory; com- 

 mon. Appears about the middle of April, in companies of fifty or 

 more, and frequents old "stubble" fields. In crossing a field, a bird 

 suddenly darts out from nearly under the feet of the observer, and flies 

 upward, nearly perpendicularly, almost out of sight. A few steps 

 further, and a couple of more do likewise, and, shortly after, again, 

 several others. After a few minutes they drop to the ground, three or 

 four hundred feet in advance. As they rise they give utterance to 

 their peculiar notes, and, on alighting, begin feeding again, unconcern- 

 edly. By cautiously advancing, several may be secured. Upon dis- 

 section, the food is found to consist of grain and seeds of various weeds. 



Genus POOCffiTES Baikd. 

 [B ZZ7,part, R 197, C 232, U 540.] 

 Poocates gramineus (Gmel.). Vesper Sparrow. Common migrant, 

 arriving the first week in April. Doubtless also a summer resident. 



Genus AMMODRAMUS Swainson. 

 Subgenus PASSERCULUS Bonaparte. 



[B 332, R 193,/, C 227. U 542 a.\ 

 Ammodramus sandwichensis savanna (VVils.). Savanna Sparrow. 

 Migratory; common. Arrives early in April. Doubtless breeds within 

 the limits of the State. It has been observed during the summer in 

 the prairie sloughs of Polk County. 



Subgenus COTURNICULUS Bonaparte. 

 [B 338, R 198, C 234, U 546.] 

 Ammodramus savannarum passerinus (Wils.). Grasshopper Spar- 

 row. Summer resident; common from the middle of April until Oc- 

 tober. Breeds in the fields and prairies. 



[B 339, R 199, C 236, U 547.] 

 Ammodramus henslowii (Aud.). Henslow's Sparrow. Summer res- 

 ident; common. Arrives about the same time as the last species, with 



which it associates. 



[B 340, R 200, C 237, U 548.] 



Ammodramus leconteii (Aud.). Leconte's Sparrow. Rather com- 

 mon. Seen usually in the spring, in the grass of sloughs near wood- 

 land. 



Genus CHONDESTES Swainson. 

 [B 344, part, R 204, C 281, part, U 552.] 

 Chondestes grammacus (Say). Lark Sparrow. Summer resident; 

 common from the middle of April until October. In the spring it is 



