Last spring, flooding destroyed 19 percent of trumpeter swan nests in Iowa. Then in the fall many of the juveniles, or cygnets, died from drought.
Iowa Department of Natural Resources wildlife research technician Dave Hoffman says modification of Iowa’s watershed causes this severe weather.
“Wetlands…act as sponges to clean and hold the water in the spring, but also…hold the water in the fall (to) provide the moisture we need.”
Something remarkable is happening in the countryside of Iowa this spring; something that hasn’t been seen to this extent, in more than 120 years. Wildlife experts are cheering the rebound of North America’s largest water fowl.