OK, let's get serious. I free-range and want fertile eggs. I sell eggs in a niche market. You do not need roosters to get eggs, and unless you have a niche market or want fertile eggs for your own use for either eating or hatching, dump the rooster. My second guess is that they are bored. Read as: not enough room to avoid each other. I'll bet you have a dominant bird or 2 that aren't losing feathers. Can you free range? If not, expand the room they have, or reduce the flock. Free ranging is my way, but I realize that foxes (mostly) and raccoons (nocturnal - only when they can invade the coop), will get a chicken dinner occasionally. Dogs help a lot, but we let them in at night, and they aren't always woofy enough to be let out in time. Everything has to eat, including foxes. I do everything I can to frustrate them, but leave roadkill near the dens. I have also shot some when they got too aggressive. I have rambled! Bottom line - too many chickies or too little room! Good Luck(posted 9666 days ago)Brad