I have three batches of ducks right now, but the older two--my three adult ducks and their two broodmate geese and the 8-week-old ducks I just raised--are ready to be together. They've been gradually introduced over the past several weeks, and they free range together without fighting. Tonight the 8-week-olds went into the adult pen at dinner time, and there have been only minor scuffles since I shut them in. For convenience, and because the timing seems right, I'm ready to put these two groups together permanently. My question: The older group is on layer pellets, the younger group has been on grower/finisher. Will it hurt the younger group just to eat the layer pellets? Or do I need to switch *everyone* over to grower/finisher (at the probably cost of at least some eggs)? Or do I need to feed them all separately before putting them together at night (which would be a royal pain)? Thanks for any thoughts!