I have 2 drakes, an indian runner and a silver appleyard. I lost my 2 silver appleyard females to a fox a couple of months ago.
My 2 drakes get on really well and I have read that, providing there are no females, then drakes living together is no problem. So I am hoping that my 2 babies, now 4.5 weeks old, are drakes also so they can all live in harmony when the time comes for them to join the others.