How to Lay Out a Predator-Proof Run in a Small Backyard

A small run is laid out from the walking aisle outward, not from the birds inward. Fix the clear working width first: 4 feet is the minimum a person can actually move in, and 6 feet is the number that changes the job, because in a tight yard the run width and the human path are the same measurement and cannot be designed separately. Then run the predator barrier as one continuous, lapped, fastened perimeter of half-inch hardware cloth, and buy the birds' space back with height instead of ground — roosts, platforms, and perches stacked inside the same footprint so a standard hen still gets the equivalent of 8 to 10 square feet of relief without the run growing an inch. Everything else falls out of those three decisions: a hardware cloth floor or a flush paver line instead of a wide buried apron, feeders pulled back from the wire, and a gate that swings outward on a two-action latch.

The first time I laid one out, I did it in the wrong order. I staked the birds' rectangle first, sized it around the coop, and then went looking for somewhere to stand in what was left over. What I ended up with was a strip between the run wall and the fence that I could stand in but not turn around in, an inward-swinging gate that jammed against a feeder every time I opened it, and a floor that went to bare mud along the exact line my feet traveled. I pulled the whole thing out the next spring and rebuilt it in the order below. None of it is clever. It is just sequenced correctly.

Walk the ground with a tape before you buy anything

Stand where you'll stand. Not where you think you'll stand — actually plant your feet and try to turn around with a bucket in one hand. That's the test, and it takes thirty seconds.

Four feet of clear width is the floor. You can rake in four feet, you can reach the far wall of wire, and you can get a hen out of a corner if you're willing to kneel. Six feet is the width where the job stops being a compromise: you can carry a full waterer in without turning sideways, you can kneel and stand without bracing on the frame, and you can catch a bird without herding her into a corner first. If your yard gives you a five-foot strip, five is fine. If it gives you three, don't build there. A three-foot run is a pen you can't work in, and a pen you can't work in is a pen that gets cleaned less and inspected less — which is how predator damage actually happens. Not on the night something digs. On the third week you didn't notice the wire had pulled loose from the bottom rail.

Two things about the ground while you're standing there. First, if the run butts against a fence, you only get one working side. Either pull the frame 18 inches off that fence so you can reach both long walls, or accept that everything — feeder, waterer, latch, inspection — has to live on the accessible side. Decide that now, not after the wire is on.

Second, notice where the water goes. A small run in a low spot holds mud and holds smell, and litter over saturated ground stops doing anything for you. If the yard drains toward the run, give it a couple inches of grade or a shallow trench on the uphill side before you frame anything. This is the part people skip, and it's the part that decides whether the run still works in February.

One perimeter, no seams

The predator barrier is a single continuous thing. It has no corners in the sense of "places where two pieces of wire meet and someone got tired." Half-inch hardware cloth, 19 gauge or heavier. Not chicken wire, not welded garden fencing, not the plastic netting sold as poultry netting. Chicken wire keeps chickens in. It does not keep raccoons out — a raccoon will pull the wire off the staples and reach through the gap it just made.

Fasten with fender washers and screws, not staples. Staples pull. Washers don't. I run a washer and a 1-1/4 inch screw every 6 inches along every rail and post, overlap the corners by 3 inches, and fold the cut ends inward so nothing sharp points into the run.

The top matters as much as the sides. In a small yard you usually don't have room for a tall netted ceiling a raccoon can't get over, so plan on a solid or semi-solid lid — or at minimum a wire ceiling fastened to the top plate the same way as everything else. Raccoons climb. Hawks come down. A lid also gives you somewhere to hang a feeder out of the litter and to shade half the run in July.

Floor or pavers, instead of a wide apron

The standard advice is a two-foot apron of hardware cloth laid flat around the outside. It works, and in a big yard it's the cheapest option. In a small yard that apron is your mow strip, your path, and possibly your neighbor's side of the fence line. Two alternatives fit better:

• A hardware cloth floor. Wire laid flat across the whole footprint, fastened to the bottom plate, then covered with three to four inches of litter. Nothing digs in from anywhere, including under the middle — and animals don't always dig at the edge. The tradeoff is real: a floor is harder to rake out, it's rough on feet until the litter packs down, and the wire corrodes at the litter line. You'll be pulling litter back with a rake and checking the floor once a season. If you won't do that, don't use a floor.
• A flush paver line. Standard concrete pavers set tight along the entire base, level with the ground. A fox or raccoon starts to dig at the base, hits a paver, and either quits or works along the line until it loses interest. It's fast, it's clean, and it doubles as the edge you mow against. The limit is that it only defends the edge, so pair it with a bottom plate screwed down through the wire so there's no gap for anything to lift.

If the budget allows both, do pavers at the base and a wire floor inside, and you've removed digging as a category.

Height is where the square feet come from

Eight to 10 square feet per standard chicken is the run number that keeps litter from going to bare mud and keeps the pecking order from becoming a blood sport. In a 5-by-10 run that's 50 square feet — five standard hens on paper, closer to four in practice once you subtract the path your own feet wear into the ground. And you will wear a path. In a small run the human aisle is a dead zone for the birds, and it's the first place the ground goes bare.

That's exactly why vertical space isn't decoration in a tight run. It does not literally add square footage to the number, and I won't pretend it does. What it does is give a bird a way out of a confrontation without leaving the run and without hitting a wall. A platform at 30 inches with a ramp. A 2x4 roost with the wide face up so feet sit flat. A low perch near the entry at knee height. A dust bath tucked under the platform in the shade. Every one of those is a place a low-ranking hen can go when the top hen is bored.

A few rules I use:

• If two birds can't pass each other in the middle of the run without touching, there isn't enough level. Add one.
• Put the highest perch where a bird on it can see the gate. They use it more, and they use it as a lookout.
• Keep the space under the platform open enough to rake. Caves you can't clean become the place you find problems.
• Block the corners. Two wire faces and no exit is where a bird gets pinned. A platform leg, a feed bin, or a hung feeder in the corner solves it and gives you storage at the same time.

Feeders, waterers, and the wire line

A feeder within a foot of the wire is a feeder a raccoon can tip, scoop, or carry off. Eighteen inches of clear zone is what I keep between any hanging feeder and any wire face that looks out on open ground — more if the ground slopes up toward the run, because a slope raises the reach.

Corners are the worst place for feed, for two reasons. A corner has two exposed wire faces instead of one, and it's the one spot where a bird can be trapped. Hang the feeder at the middle of a long wall, or hang it off the underside of the lid, and set the waterer on a paving stone so the spill doesn't turn the floor to soup under it.

Feeders sitting on the ground also get scratched full of litter in about an hour. Hung at roughly the height of a bird's back, with a tray, they stay cleaner and the raccoon has to work for it.

The gate

Swing it out. An inward-swinging gate in a four-foot run has to clear the litter, the birds, the feeder, and your own knees, and it will catch on all four. An outward swing keeps the run interior clear and lets the gate fold back flat against the fence when it's open — which matters when the open gate is standing in the only path in the yard.

Hinge it at the corner, not in the middle of a wall, so it folds back along the fence line instead of jutting into your walking route.

The latch should take two motions. A plain hook-and-eye or a slide bolt is a puzzle a raccoon can solve. Not every raccoon, but enough of them that it isn't a risk worth taking. A barrel bolt with a carabiner clipped through the eye, or a spring-loaded latch you have to lift and push at the same time, is two motions — and two motions is the threshold that holds in practice. Put the latch near the top of the gate rather than the middle, and check the throw. A latch that only engages half an inch is a latch that works itself loose as the frame moves with the seasons.

Then close the bottom. A pressure-treated board or a paver at the gate threshold keeps litter from washing out under it and closes the gap that opens as the ground settles. That gap is small. Small is all a weasel needs.

What I do on the walk out

None of this matters if it isn't checked. The circuit takes two minutes: eyes on the bottom rail for pulled wire or a dug edge, hands on the latch, a look at the corners of the lid where the wire meets the frame, and a glance at how much clearance there is between the feeder and the wire. The night something gets in is almost never the night the wire failed. It's the fourth week after it failed, in a spot nobody stood close enough to see.

Build the run around the person who has to work in it, and the birds get their space back in the air. That's the whole layout in a small yard.