Snakes go after chicken coops for two things: eggs and chicks. Most of the snakes that show up, rat snakes, king snakes, black racers, are harmless to you but rough on a flock, so keeping them out is worth the effort. The core of it is simple: cover every opening with 1/4 inch hardware cloth and take away the hiding spots. Here are the ten steps.
1. Cover Every Opening With Hardware Cloth
Every window, vent, and gap gets 1/4 inch galvanized hardware cloth, fastened with screws and washers, not staples. Snakes can push through stapled mesh.
2. Elevate the Coop
Raise the coop at least 18 inches off the ground. It removes the hiding spot underneath, makes it harder for a snake to reach the floor, and improves airflow while you’re at it.
3. Clear the Perimeter
Cut back debris, tall grass, weeds, and wood piles within 10 feet of the coop. Snakes use that cover to approach undetected.
4. Bury a Barrier Around the Coop
Bury 1/4 inch hardware cloth at least 6 inches deep around the perimeter, bending the bottom few inches outward at a right angle. That stops snakes from going under the walls.
5. Seal Every Gap
Caulk or foam gaps around pipes, wires, and corners. A gap of just 1/4 inch is enough for a young snake.
6. Secure the Chicken Run
Cover the whole run, including the top, with 1/4 inch hardware cloth. Snakes climb wooden posts and get in over the top. Steel posts help too.
7. Collect Eggs Daily
Snakes come for the eggs. Collect them at least once a day, in the morning, and don’t leave them in the nesting boxes overnight.
8. Cut Down the Rodents
Rodents are what draw snakes in. Store chicken feed in metal containers, clean up spilled feed, and clear rodent hiding spots around the coop.
9. Add Motion-Activated Lights
Lights don’t do much to snakes directly, but they deter the rodents that attract them, which removes the reason a snake hangs around.
10. Inspect Weekly
Walk the coop once a week looking for new gaps, damaged mesh, and signs of snakes like shed skin or droppings. Catch a problem early and it stays small.
For more, read my snake barrier guide.
Frequently Asked Questions
Most coop snakes go for eggs and chicks, not adult hens. Rat snakes, king snakes, black racers, and bull snakes are the common egg-eaters. A big constrictor might take a small chick, but an adult hen is rarely the target.
Yes, they swallow eggs whole, and a rat snake can take several in one feeding. Collecting eggs daily is your best defense.
Yes. Chicken wire’s hexagonal openings are big enough for young and small snakes to slip through. Use 1/4 inch hardware cloth instead, chicken wire is for chickens, not snake exclusion.
Look for missing eggs or chicks, shed skin, snake droppings (liquid with a white tip), and disturbed nesting material. You might also find the snake itself coiled in a corner or nesting box.
The Bottom Line
Snake-proofing a coop comes down to 1/4 inch hardware cloth on every opening, including the top of the run, an elevated coop, a clear perimeter, and a buried barrier around the base. Collect eggs daily, control the rodents, and check the coop weekly. The single best upgrade is replacing chicken wire with hardware cloth everywhere.
