Not too long ago, the call of the Trumpeter Swan was unheard in Iowa; the last nesting pair was seen in 1883. But with concentrated effort from biologists and conservationists, the species has made a comeback in the state.
Wildlife biologist Jim Pease and Bruce Ehresman, of the Department of Natural Resources, join host Charity Nebbe to discuss how certain species, with the help of humans, have made a return to the state.