Iowa is a fertile ground for nature study, owing to its seven national wildlife refuges and 110,000-acre wetland management district. With its vast, sweeping plains, including tallgrass prairie, floodplains, pothole wetlands, and river valleys, Iowa hosts over 2,000 plant species, as well as massive congregations of wildlife, especially migratory waterfowl and cranes. There are also iconic mammals such as American Badger, Black-tailed Prairie Dog,...