Long-term Trends in Iowa Wildlife
Every August, Iowa Department of Natural Resources staff head out at dawn to survey pheasant populations along rural roads. Todd Bogenschutz, an upland wildlife biologist, has driven the same 30-mile stretch in Boone County for three decades. He carries binoculars and an interactive logging application to track bird movements. His work provides a consistent snapshot of the state's pheasant counts against a changing landscape.
The 2026 survey results show an average of 22.6 pheasants per 30-mile route. This is the second-highest population level since 2015, yet the count represents a 17 percent decrease from the 27.5 pheasants recorded per route in 2025. Before the turn of the century, these averages frequently topped 40 birds per route. While counts dipped below 10 per route during the 2010s, current numbers remain well below the historical highs of the 1990s.
The Impact of Habitat Loss
Weather patterns influence yearly fluctuations, but habitat availability drives long-term population changes. Since 1995, Iowa has lost more than 1.4 million acres of total habitat including Conservation Reserve Program (CRP) land, hay fields, and small grain areas. Bogenschutz notes that fields once filled with native grasses are now often tilled for cash crops like corn or soybeans. When a farmer finds it more profitable to plant on marginal land, the protective grass cover disappears.
Larger grassed areas provide essential nesting grounds and protection from predators. Many current conservation efforts focus on narrow strips of land, which offer some benefit but fall short of the protection provided by larger contiguous plots. Legislative progress on a new federal farm bill remains stalled as lawmakers debate nutrition program policies. Meanwhile, the national cap for CRP enrollment remains at 27 million acres, the same level established in the 2018 law.
Survey Methodology and Future Outlook
Researchers standardized these roadside surveys in the 1950s with help from Iowa State University. Staff conduct counts on mornings featuring heavy dew and low wind, which encourages birds to seek dry ground near road edges. This specific methodology ensures data consistency across decades. The information collected during these August mornings serves as a primary resource for predicting outcomes for the state's upcoming pheasant hunting season.
As the state prepares for its 101st pheasant hunting season, biologists project a successful harvest for hunters. The report estimates between 350,000 and 450,000 roosters will be harvested this fall. Other species tracked during the survey show mixed results. Bobwhite quail populations fell to less than one bird per route, while gray partridge counts rose by 6 percent. Cottontail rabbit numbers remained steady compared to the 2025 counts. These patterns will continue to inform state land management and future conservation policy discussions as regional wildlife habitats remain under pressure from agricultural land use.