Here is a link about growing cranberries, step by step, for those of us who are under-informed and most likely misinformed about the process. I guess they are only flooded during harvest time (but can also be dry harvested), though they do have very high water requirements and must be kept moist in a very specific soil combination at a very specific PH. They also have pests/diseases that are specific to the plant. Their fertilizer needs are very dependent on the age of the plant and what stage of growth/production it is at. I found this link interesting. https://www.wikihow.com/Grow-Cranberries It sounds like they are more like strawberries than grapes, being a low growing plant that sends out runners, which will then produce fruit. If ducks should prove to be useful, I think I would go with a lightweight, calm bird like the Welsh Harlequin, who would be less likely to damage the plant trampling it, if indeed a duck would prove helpful for those insect pests specific to cranberries. Although one insect pest mentioned is a borer, that gets inside the fruit and eats it from the inside out. Not sure how much help a duck would be for that exactly.
