Will the offspring be able to fly??? I started with 15 ducks (khaki, Rouen, runner and metzer layer hybrids). Thanks to predators I now have 11. I want to be able to let them free range. Yesterday I saw a big old fox. So I find the ability to be able to fly very attractive (as long as they stay). If I buy a baby mallard and raise in the pen and let that mallard breed with my current flock, will the offspring fly?