I2.S DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Subfamily FALCONID.2E. Falcons. 



Genus FALCO Linnaeus. 



Subgenus .ESOLOX Kali-. 



[By, R 417, C 505, U 357.] 

 Falco columbarius Linn. Pigeon Hawk. Usually noticed during 

 the spring and fall migrations. Not common. 



Subgenus TINNUNCULUS Vieellot. 



[B 1 3, R 420, 420 a, C 508, 509, U 360.] 

 Falco sparverius Linn. American Sparrow-hawk. Summer resi- 

 dent; common from March until October. Nests in cavities in trees. 

 Commonly met with along country roads, where it perches upon tele- 

 graph poles and dead trees. It is not uncommon to see half a dozen 

 or more of these birds at one time, hovering over a field, and ever and 

 anon darting down to seize some unfortunate field-mouse, grasshopper, 

 or reptile. 



Subfamily PANDIOXFVE. Ospreys. 



Genus PANDION. Savigny. 



[B 44, R 425, C >y\ V 364.] 

 Pandion hah actus Caroline lists (Gmel.) American Osprey. Rare 

 summer resident. This bird is occasionally shot on the Des Moines 

 River a few miles above Des Moines city. 



Suborder STRIGES. Owls. 

 Family STRIGID^E. Barn Owls. 



Genus STRIX Linn.eus. 



[B 47, R 394, C 461, U 365.] 

 Strix pratmcola Bonap. American Barn Owl. Rare. Very sel- 

 dom seen in central Iowa. 



Family BUBONIDiE. Horned Owls. 



Genus ASIO Bkisson. 



[B 51, R 395, C 472, U 366.] 

 Asia wilsonianus (Less.). American Long-eared owl. Resident; 

 apparently not as common as some of the other species of Iowa 

 Bubonidce. This may be due, in part, to its nocturnal habits, though 

 it is not unfrequently met with in its favorite haunts — the dark shady 

 woodland covering the bluffs. It commences to breed about the sec- 

 ond week in April, and usually appropriates some abandoned nest of a 



