My older ducks are 5 months, the new ones are 2 months. We want to introduce them to one another, as for the past month they’ve seen each other everyday through a fence. Sadly, whenever we let out older ducks free roam; they immediately go to pecking at them through the fence. It’s the two drakes that peck at the babies. Any idea why? If we put them together I’m afraid the drakes will continue to peck the babies! Our female doesn’t mind them, but the drakes hate them! It’s getting colder, so we’d like to put the babies with the older ones so they can cuddle for warmth! One of the babies has a broken leg, that we’re trying to treat and heal. We don’t know the gender of the babies, either. Will our drakes stop pecking eventually? Any advice appreciated!