Thanks for the reply, hopefully things will sort themselves out over here soon. Funny to say yours attacked the hen, when my drake mounts the young mallard hen, the dominant mallard hen attacks the drake, and the rouen attacks the young hen! but this only happens in that combination.
Also thought I should mention that the rouen and dominant mallard do the sideways headbobbing to each other and also mount one another, is it possible the mallard is pushing away the call drake because socialy she has a "mate" for this season?
My nearly three year old Mallard bantam still won't allow the blue fawn drake I introduce to them two weeks ago to breed any of the female ducks.
He breeds the mallard hen he came with, and attempts to force the rouen hen to copulate (this rouen is the absolute best friend of my dominant mallard...