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Whistling Ducks' Wild Range Expansion Alarms Farmers
17 Oct
Summary
- Tropical whistling ducks now breed in 90% of Texas counties.
- Milder winters, farming shifts, and exploratory behavior aid expansion.
- Farmers, especially in Louisiana, report crop damage and costs.
Black-bellied whistling ducks, native to tropical regions, have dramatically expanded their U.S. breeding range. Historically limited to a few South Texas counties, they now breed in 90% of Texas counties and are found along the Gulf Coast, Eastern Seaboard, and Midwest. Researchers cite potentially milder winters and shifts in rice cultivation as contributing factors, though the exact causes remain uncertain.
This population growth, recovering from past pesticide impacts, has led to significant concerns for agriculture. In Louisiana, rice farmers reported $3 million in crop damage in a 2024 LSU AgCenter report due to the birds. Experts also note the potential for similar impacts in California's Central Valley if the species establishes there.
Wildlife management and hunting interests are also adapting to the expanded population. Louisiana has an experimental hunting season, and Texas permits hunting during the regular duck season. Understanding the population's structure and connectivity remains crucial for effective management strategies.
