The two doors serve different purposes: one is the main entry for you, the other is the pop door that lets chickens in and out
A chicken coop with two doors works like an airlock. The larger door — usually on the side or front — is where you enter to collect eggs, refill feeders, and clean. The smaller door, called a pop door, is sized for chickens alone and opens to the outdoor run or yard. This separation means you can find the coop at night without trapping yourself inside, and your birds can move between the sheltered coop and the open run on their own schedule during the day.
The pop door is typically 10 to 14 inches square, just big enough for a full-size chicken to squeeze through without effort. The main door is human-sized — usually 2 to 3 feet wide — because you need room to move feeders, water containers, and bedding in and out, and to reach nesting boxes and roosting bars without crouching.
Key Takeaways
- The pop door lets chickens move freely between the coop and run during daylight hours while keeping predators out at night.
- The main door gives you access to feeders, water, nesting boxes, and cleaning tasks without squeezing through a chicken-sized opening.
- You can close the pop door at dusk to lock birds inside the coop, then open it again at dawn without entering the coop yourself.
- A pop door with a sliding or hinged cover lets you control when chickens can leave, useful for keeping them penned on wet days or when predators are active nearby.
The pop door controls when chickens can roam
The pop door is your tool for managing when birds are inside or outside. In the morning, you open it and let them into the run or yard to forage, dust-bathe, and peck. At dusk, you close it — usually with a sliding panel or hinged cover — and the chickens are locked safely inside the coop for the night. This routine protects them from raccoons, foxes, and hawks that hunt at dawn and dusk.
Many pop doors come with an automatic opener that raises the door at sunrise and lowers it at sunset, so you do not have to be there at those exact times. If you have a manual pop door, you open and close it by hand. Either way, the pop door is the barrier between your birds and the predators that would otherwise reach them.
On days when weather is bad — heavy rain, extreme heat, or snow — you can keep the pop door closed and let chickens stay in the coop. They have food, water, and shelter, and you avoid the risk of them getting stuck in mud or wet bedding outside.
The main door is built for your access and comfort
The main door exists because you cannot do daily coop work through a 12-inch opening. You need to carry in 50-pound bags of feed, replace water containers, haul out soiled bedding, and reach into nesting boxes to collect eggs. A door sized for your body — typically 2.5 to 3 feet wide and 5 to 6 feet tall — lets you work standing up without back strain.
The main door also lets you inspect the coop for damage, mold, or pests. You can see the roosting bars, check for broken boards, and spot signs of illness or injury in your flock. Many coops have the main door on the shaded side to keep the interior cooler and to reduce the glare that stresses chickens.
Some coops have the main door positioned so you can see into the run without opening it fully. This is useful on cold mornings when you want to count birds and check their condition before deciding whether to open the pop door.
Predator protection depends on both doors working together
A single door — even a find one — leaves a gap in your defense. If the pop door is always open, a determined predator can slip in during the day. If you only have a main door and no pop door, you have to choose: leave it open so chickens can roam (and risk a predator entering), or keep it closed (and trap your birds inside all day with no outdoor space).
The two-door system lets you have it both ways. During the day, the pop door is open and the main door is closed. Chickens roam freely, but the smaller opening is harder for a large predator to force. At night, both doors are closed and locked. A raccoon cannot pry open a properly secured pop door, and the main door is too heavy for most predators to break through.
The pop door should have a latch or lock that you can find from outside the coop. A straightforward slide bolt works, but a padlock is better if you live in an area with determined predators or if you are away from home for extended periods.
Pop door placement affects how your coop functions
The pop door is usually on the side of the coop that faces the run or yard — the area where chickens spend their day. If your coop is a fixed structure with an attached run, the pop door opens directly into that run. If your coop is mobile or sits in an open yard, the pop door should face the direction where you want birds to roam.
Some coops have the pop door elevated 12 to 18 inches above ground level, with a ramp leading down. This design keeps the coop floor drier (water and mud do not flow in as easily) and makes it harder for ground predators like raccoons to reach the opening. Chickens learn to use the ramp quickly, usually within a day or two.
The main door is typically on the opposite side of the coop from the pop door, or on the end. This keeps you out of the direct path of chickens trying to exit, and it means you are not standing in front of the pop door when you open the main door to work.
What happens if your coop has only one door
A single-door coop is workable but less convenient. You have to choose a door size that works for both you and the chickens, which usually means a compromise — large enough for you to fit through, but not so large that predators can easily enter. You lose the ability to let chickens out without opening the main door, which means every time you want them to roam, you have to prop the door open or risk it swinging shut and trapping a bird.
Single-door coops are common in smaller, portable designs or in setups where the coop sits inside a fully enclosed run. If the run itself is predator-proof, a single door to the coop is less critical. But if your chickens roam in an open yard or if you live in an area with active predators, a second door gives you much better control and safety.
Frequently Asked Questions
Can I install a pop door on a coop that does not have one?
Yes. You can cut a hole in the side or end of the coop and install a frame with a sliding or hinged door. The opening should be 10 to 14 inches square. You will need a saw, a drill, hinges or a sliding track, and a latch. Many hardware stores sell pop door kits that include the frame and hardware.
What size should the pop door be?
A standard pop door is 10 to 14 inches square. This fits a full-size chicken (like a Rhode Island Red or Wyandotte) comfortably. Bantams and smaller breeds can use a 10-inch opening. If you have very large breeds, 14 inches is safer to avoid jamming or injury.
Should the pop door have a ramp?
A ramp is helpful if the pop door is more than 12 inches above ground. It keeps the coop drier, protects the opening from ground predators, and gives older or injured chickens an easier way to enter and exit. Chickens learn to use ramps within a few days.
Can I leave the pop door open all night?
No. An open pop door at night is an invitation to raccoons, opossums, foxes, and other predators. Always close and lock the pop door at dusk. If you forget, you risk losing birds to a nighttime attack.
What if my chickens refuse to use the pop door?
New chickens sometimes need encouragement. Place food or treats just outside the pop door to draw them toward it. You can also gently place a bird near the opening so it learns the route. Most chickens figure it out within a week, especially if they see other birds using it.