Hi I have two adult females and looking to add a third. We really want a Welsh Harlequin (Swedish is another possibility), but it's hard to find a young adult for sale. So, if we order a day-old while one of our ducks is broody, will she help raise it? Also, is this a bad idea in general? I believe that we will need to separate the other adult away from the adoptive momma and duckling for a few weeks. Will this cause too much stress for the separated adult? Thanks for your help!