How long have they been that way now? another thing you could do is place a few of your resident ducks on their side and see how that goes. If it goes good [I mean no one was attacked] there might be some chest bumping some nipping, but as long as it doesn't get out of hand. Make sure you put...
When first introducing let everyone out together in a more neutral setting and toss mealworms or scratch or something really yummy out so they aren't fixated on the new ones right off. Always supervise. I wouldn't pen the new ducks up with your chickens, we just had a member whose duck got her...
They are beautiful:love
They both look to be in good weight but it's pretty hard to tell with all the feathers. Best way is by feeling is the breast bone poking out?
Hopefully soon your resident ducks will accept them. Is it possible for them and your resident ducks to be where they can see...
Add more straw for sure. Are they eating good? Give them nourishing feed and make sure they can dunk their head and keep their nares cleaned out. If your temps are below freezing I don't think I'd let them swim. Keep them out of cold wind until they have acclimated to the temps. My Runners will...