I Have chickens in other pens that have figured it out, but these ones just dont seem to get it lol. the golf balls dont help them wither lol. They just look at them in amazment and peck them. Lol funny saying, i have never heard that one i have heard dumber than a box of rocks before though. I use it uite frequently, as there are too many stupid people lolYay!! My girls finally figured it out, despite the occasional egg by the feeder. The silkies think under the ramp outside is the nesting box. More time was spent on aesthetics than intelligence when they were created. Cute, but dumber than a bag of hammers.