When I first got my chicks I ordered this:
http://www.amazon.com/Add-A-Motor-Chicken-Coop-Motor-D20/dp/B007IZJWNQ/ref=sr_1_1?ie=UTF8&qid=1414813303&sr=8-1&keywords=Auto+coop+door
But it laid around in the garage for nearly 2 years before loosing a hen out of the open coop at night forced me to...
