This paper consists of notes on the more common summer-resident birds of Polk County, Iowa. Its purpose is not to give an exhaustive treatment of the subject, but merely to include those birds which the true, faithful student can expect to find nesting in this county every summer.
Proceedings of the Iowa Academy of Science
©1909 Iowa Academy of Science, Inc.
Fagan, Lester P.
"The Summer Resident Birds of Polk County, Iowa - A Guide to Local Study,"
Proceedings of the Iowa Academy of Science, 16(1), 197-215.
Available at: https://scholarworks.uni.edu/pias/vol16/iss1/27