Not every opinion is correct, but some are. And if you’re talking about facts, here’s one: drakes often rape hens when they are kept together. Hens don’t have the correct anatomy to make such penetration safe, so it is often serious and maybe fatal. Why take the risk? Plus, since the way are totally different species they have different water and space needs. Why not just house them separately? Nobody said it never works but why take the risk?1. That is an opinion, not a fact,