My 4 Runner/Swedish have been home for about 10 days now and have settled in very well. I finally worked up the courage to let them out and that's going well, too. Here is the problem. One of the boys has been dropping his butt as he waddles around but only when they are outside the pen. It's every few steps or so, looks like he's about to sit down, it's very quick. Another boy was doing it too but only a few times and he hasnt since. But Gunter still is.Gunter is otherwise totally fine, his behavior is no different from the others and his appetite is same as always, just like the other 3. Does anyone know what's going on? I found something on the boards about constipation,and gave him some lettuce yesterday. It's just that with 4 ducks who knows whose poo is who's?Any advice or info would be appreciated. Thanks.