I was given all three. The two on the ground I was told werd Muscovy ducks. The other one my daughter got from a feed store and they didn't know for sure. So please help? Will they bred together? The 2 laying down are girls, the other is a male
The 2 really don't look Muscovy to me, though I am no expert. Look at buff orpington and blue swedish as someone else suggested. The 3rd does look rouen. They will interbreed. Do you have any other pictures? Of them standing up may help.
Regardless, they are very pretty.