IOWA, USA — The Iowa Department of Natural Resources is calling the increased population of the state’s trumpeter swans a ” true modern-day conservation success story.”
Iowa trumpeter swans attempted a modern-day record 158 nests in 2025, which the DNR said was a 17% increase since 2022.
The department used data from the most recent survey completion, which took place in December. The 2025 midwinter waterfowl survey recorded more than 4,700 swans in Iowa…