I have a polished quartz egg that i put in and take out of the nest box I originally put it in because at 1st I didn't have a nest box, and my bo was laying in the bottom of the coop, I keep taking it out because the bo seems to lay her egg plop right down on top of it and cracking her egg, I try pushing it to the outer edge of the nest but they move it back to the center, I think I'll take it out for good now that I know they know where they are sposed to layeven if jodie the campine is faking me out least she knows something is suposed to happen in the nest, no the reason I was thinking it might make them go broody is if they see those fake eggs sitting there day after day iI was thinking nstinct might kick in