Welcome to BYC! Glad you decided to join our flock. As you have indicated, you definitely need to get rid of all those extra roosters. The recommended ratio of roosters to hens is 1 rooster for every 10 hens. Any more roosters than that can quickly lead to aggression, fights, feather plucking, and over-bred and battered hens like you are experiencing. When you really get down to it, the only reason you really need a rooster is to fertilize eggs for hatching. I currently have 25 hens, no roosters, and I get loads of eggs without feeding any non-egg laying mouths, without the aggression, fights, crowing in the middle of the night, and over-bred and battered hens that frequently goes along with having roosters (especially too many of them). Hopefully you can find some way to trade those extra roosters in for some more hens. Good luck.