I have five hens that have been laying for a while now. I bought some chicks several months ago and two turned out to be roos. The one roo is very happy being a rooster and I was wondering if this could be stressing out my older hens (they are about fifteen months old). I didn't have a rooster with them before and their egg production is almost non-existent lately.... like three eggs in the last eight days. Before we were averaging 3-4 eggs a day. I know the weather is a factor, shorter days and all too. Can roosters stress chickens if they aren't used to them?