For the past few years, the U.S. Fish and Wildlife Service has made the September teal season available to Iowans. This early season runs for 16 days statewide (Sept. 1-16). According to Orrin Jones, waterfowl research biologist headquartered out of Clear Lake, the early season is timed to take advantage of the peak migration of teal through Iowa. Although all teal species are legal during this special season, blue-winged teal will be the most common in Iowa.