I usually just have either 1 or 2 golf balls in each nest, then I got some glass eggs that are white with either green swirls or blue swirls in them. No mistaking those. But when I first moved the girls to the new coop, I had put 4 fake eggs in one nest and that is when my Silkie decided to go broody on them. So don't put too many in one nest unless you want someone to try putting real eggs under, lol.