i used to put my chickens in a dog cage until i realized i have to create a coop for them. not only for my convenience but also for my chickens to have wider space. The idea is to create a coop which can be expanded so they can dust bathe, run, flap their wings and sun bathe too. my backyard get a little sunlight in the afternoon due to the high wall. i have a space just below my stairs. It used look like this: So we put doors on it Here's the best part. If you open the door: You can just put the front gate And the cover at night, i just remove the gate and the cover. Easy to setup and the birds are happier!