Thank you MissusDee!!! They are about the same size. They do pretty good in with the chicks and am gonna try to let them out this weekend, supervised of course, by themselves. They are about 4 weeks old. I'm guessing that that's okay.
Just put them in our run by themselves. I think it's a little chilly here in Wisconsin this morning for the chicks, but from my understanding the ducks can handle it. Put some hay in a corner for them and they were happy to have it to themselves!! They even quacked a little today!!!