My nephew wants a couple of my muscovey ducklings for his kids.But he dont want them till they have there flight feathers in so they can fly away to safty. They will be free ranging them during the day and maybe even the night when they are grown. They are 8 weeks old. What will be a good age for them to go to there new home? Should i give him 2 ducks or a duck and drake? Does the drake help protect the flock like a rooster does?