Welcome to BYC. Glad you decided to join our flock. You might want to consider re-homing some of your roosters. The recommended ratio of roosters to hens is 1 rooster for every 10 hens. As they mature and their hormones kick in, too many roosters will become very hard physically on your hens, over-breeding them, biting and plucking the feathers from their necks and backs, battering them, and potentially, seriously injuring them. The only reason you really need a rooster is to fertilize eggs for hatching and 1 rooster can easily handle 10-15 hens in that regard. In addition, hens that are less stressed by an over-abundance of roosters will lay better. Please feel free to ask any questions you may have. We are here to help in any way we can. Cheers.
x2 on Michael's comments re: roo to hen ratio. What breed of ducks to you have? If you haven't found it yet, there's a great forum for duck members on BYC: https://www.backyardchickens.com/f/42/ducks
Good luck with all your animals. It's nice to have you join us!