James K. Ringelman

• Decoy traps for ducks
• Ecology of montane wetlands
• Evaluating and managing waterfowl habitat
• Habitat management for molting waterfowl
• Identifying the factors that limit duck production
• Life history traits and management of the Gadwall
• Managing agricultural foods for waterfowl
• Managing beaver to benefit waterfowl
• Waterfowl management handbook