My sister-in-law has decided she simply must have a duck now that we do and cannot have any at home with her unruly mob of canines. She has asked to get one and us keep it with ours. Likewise, 2 of our boys have decided they like them so much they each want one of their own. The chicks and ducks we have now are about 3 1/2 weeks old. Adding new baby ducklings doesn't seem wise with our 3 large babies though the chicks are of course much smaller yet. Our current mixed flock is quite happy together. How would I, and SHOULD I, add several new baby ducks? At what age if not now? Probably once they are past the chick feeder stage?