Bruzual, Iris, and Iris Bruzual. “Feeding Habits of Whistling Ducks in the Calabozo Ricefields, Venezuela, During the Non-Reproductive Period”. Wildfowl (January 1, 1983): 20–26. Accessed February 13, 2026. https://tidsskrift.dk/Wildfowl/article/view/154251.