Five months. The turkeys and ducks raised at home will eat a lot from/kloc-0 to 5 months, because growth requires a lot of nutrition. After 5 months, the turkeys and ducks have grown into adults, and their food intake will gradually decrease. Fire duck, the scientific name is wart-headed duck, commonly known as South Fire Duck and North Fire Goose. This species originated from American geese and was introduced to Yunnan-Guizhou Plateau in China.