I have a question for some of you more experienced duck owners. The last 2 to 3 years I have had a wild Mallard living with my flock and breeding with my females, so a lot of his offspring have matured this year. In the last few weeks seven of my male ducks disappeared all together. There was no sign of a struggle no feathers no blood could it be possible that they all just flew away to find a better pond? Thanks for any ideas.