I had to get 2 ducks, they are now 1 yr old, bc I had 2 ducks & 1 died. So the new 2 ducks got along & now the 2 new ducks are chasing off Daisy, the original duck. They chase him into a corner in the pin & chase him off in the pond & everywhere- it’s been going on about a month. Will they work it out or do I need to get rid of one of the ducks or get a 4th Duck? Please help!