I install an automatic door from Amazon for the chicken coop. I give a tour of what kind of automatic waterer and feeder systems we use for our chickens.
If you are shopping for an Automatic Door on Amazon make sure it has the locking mechanism.
Links:
Automatic door - https://amzn.to/3j1xuOy
Chicken water nipples - https://amzn.to/3d3AVk7
Feeder kit - https://amzn.to/3xGS0rZ