While driving down a two-track road, deep in the Nebraska Sandhills, one may be so lucky to witness a heavenly white bird gliding across one of the many spring-fed lakes. The trumpeter swan is the largest waterfowl species in the world. Almost hunted to extinction, these birds have since been reintroduced to the Nebraska Sandhills and are thriving there today. But conservation work is never done, and challenges for these birds loom on the horizon.