Like the chicken coop, could a duck coop be added? It could get a bonus from being by fishing ponds (perhaps at a slight impact on the fish recovery rate).
I have ducks on my farm, runner ducks mostly, and as long as they have some water to swim in they are fine. But they love being new a pond if we move them there, and will get bigger and lay more eggs being able to eat the little fish and pond plants.
Love the game, been playing since very early in Early Access. Thanks for the great work!