DES MOINES, Iowa, Dec. 30 -- The Iowa Department of Natural Resources issued the following news release: * * * Icon of the wetlands, Iowa's trumpeter swan population continues to grow * Iowa's trumpeter swans attempted a modern-day record 158 nests in 2025, which is an increase of 17 percent over 2022. The nesting data is from the most recent statewide observation survey completed in December. "It's a neat story about the restoration. We spent a lot of time and effort to get the population  more