I am about to start my first venture into raising ducks! My main purpose for having ducks is for the eggs. But, I know that they live up to 3 times their laying age so my question is, are ducks suitable for meat at a ripe old age of 4 or 5, when they've stopped laying? I wouldn't dream of just abandoning any animal but I also don't want to accumulate too many ducks while taking on more for eggs while still taking care of the older ladies too. I'm considering Khaki Campbells and blue runners, if this makes a difference in guiding me. Thanks!