I have seven ducks. Two are buff girls, three are WH girls and then two WH drakes. The two buff girls are a year plus and the WH ducks are this years hatch. Now for the problem. The one drake has become so rough with the buff girls and the smallest WH girl that they wont get in the pond. When they do he makes a beeline for them and will get on one of their backs, grab their head and dunk her while he attempts to breed her. Their feathers are torn and necks look so rough. Does he become Thanksgiving dinner? Suggestions? What is going on? Thanks in advance!