My neighbour has a male goose that hangs with the ducks and previously kicked out of the goose gang. He really thinks he is a duck and is now mating with them. Is that normal and will her eggs get fertilised by him?
if no female goose is around and he is in breeding season yes they can try and breed ducks. It can also injur or kill the ducks and no her eggs wont be fertile.
Just my opinion but I would not let the gander breed the geese. Time to separate the ducks from the gander... That is what I would do in breeding season.
I agree with Miss Lydia. My muscovy drakes are about the same size as my ganders, but the muscovy penis is huge, the gander not. Can´t imagine it would do any damage. As for near-drowning, there´s no difference! And if the muscovies don´t like it, it´s not as if they can´t escape! Mine run like the clappers when the young drakes are trying to get them, the ganders would have no chance! I got rid of an extremely randy muscovy drake that was trying to mount my geese, though, he terrified them, they couldn´t out-run him.