I have a bard rock and a gold commet that just started laying. I had put plastic easter eggs in the nest box but it didnt help, they laid two in the run and one on the coop floor. Then I cleaned out the nest box and nailed a 3 " strip of ply along the bottom of the box put fresh shavings and the fake eggs back in. Havn't had an egg on the ground since. Even the polish who laid her first egg today laid in the nest box.