We have a drake and a hen duck along with the nine Australorps. They share a run but they have separate sleeping quarters.vI thought they were getting along fine as they seemed to leave each other alone for the most part (the drake and hen duck are always together). Today, I saw the drake on top of one of the Australorps. Is this going to be a problem? If I put in an additional female duck (or two), will the duck be able to differentiate among the species?