Hi there, I live in Ireland & it's suposed to be cold now. My chickens (9 of them ) are laying better now than they did in the summer. Most days i get 6 eggs , & at least once a week i get 8. Back in May i had 2 eggs hatch & they both turned out to be roosters. We havn't had the heart to give them the chop & i'm wondering if having the boys in with the girls makes them more productive.
You may eventually need to lose one of the roosters since 2 may overbreed the 9 hens.
I read some research that showed pullets start laying sooner if there were roosters present. They didn't have to be housed together, they only needed to be able to see them.