Winter chicken coop prep is a 2-hour Saturday project that saves you from frozen waterers, frostbitten combs, respiratory illness, and stopped laying. Here's the checklist that covers every critical detail, organized in the order I actually do it on our farm.
Before the first frost
- Deep clean the coop. Remove all old bedding. Scrub roosts, nest boxes, and walls with a 1:10 vinegar-water solution. Let dry 24 hours.
- Inspect for leaks. Look at the roof from inside the coop on a sunny day — any pinprick of light is a leak. Patch with roofing tar or asphalt shingle scraps.
- Seal drafts at bird level. Cold air blowing directly on roosting birds causes stress and respiratory issues. Caulk or weatherstrip around doors, windows, and corners below the top third of the coop.
- Open or add high vents. At least 1 sq ft of vent space per bird, above roost height. Cover openings with hardware cloth. Yes — vent even at -30°C. Moisture is the enemy, not cold.
Bedding and ventilation
- Layer 4-6" of deep litter. Pine shavings, straw, or a mix. The deep-litter method composts through winter, generating gentle heat from the floor up.
- Add a pine-shaving layer to the droppings board under the roost. Easier to scrape clean weekly.
- Don't seal the coop airtight. Condensation = frostbite. Always leave high vents open.
Water
- Plug in heated waterer / heated base. Test that the base actually warms. Replace the cord if it's damaged.
- Run a GFCI-protected cord from the house if needed. Don't run through snow or standing water.
- Keep a backup thermos of warm water. If power fails, pour hot water over the frozen waterer to thaw it quickly.
Roost and nest box prep
- Inspect roosts. Wide roosts (2×4 with flat side up) let birds cover their feet with belly feathers, preventing frostbite.
- Clean and line nest boxes. Dry straw or shavings, changed weekly. Eggs that freeze crack.
- Collect eggs twice daily in winter. -10°C and below, eggs freeze within 30-60 minutes.
Run prep
- Windbreak on prevailing-wind side. Straw bales, pallets, or tarps — anything to break the wind.
- Clear snow paths. Chickens won't walk on unbroken snow. Shovel or lay straw paths in the run.
- Add a dustbathing corner in the coop. A bin of dry sand + wood ash + diatomaceous earth. Keeps mites down and boredom at bay.
- Cover part of the run with a tarp. Creates a snow-free zone where birds can still go outside.
Feed and scratch
- Switch to higher-protein winter feed. 20% protein helps with thermoregulation and keeps laying steady.
- Offer scratch or cracked corn 30 min before dark. Digesting overnight generates warmth.
- Supplement oyster shell free-choice. Calcium demand stays high even in winter.
Supplemental light (optional)
- If you want eggs through winter, add a timer-controlled LED bulb. Total daylight = 14 hours. Set timer to add morning light (easier transition than evening).
- Use a low-wattage LED, not a heat lamp. Heat lamps start coop fires every winter in Canada.
Pre-snow final checks
- Mouse guards on low openings (mice chew eggs and spread disease).
- Predator-proof the run — raccoons, fisher, and weasels are especially active in winter.
- Stock up on petroleum jelly for extra-cold nights (on combs and wattles).
- Review your emergency plan: what happens if power fails for 48 hours?
FAQ
Is -30°C really okay without a heat lamp?
Yes, with the right setup. Dry, draft-free, well-ventilated coops keep hens healthy to -40°C. Most winter deaths are from humidity or electrical fires, not cold.
My hens stopped laying in December. Normal?
Entirely. Laying is day-length dependent. Natural rest through the darkest weeks is fine. Add timer-lit supplemental light if you need consistent eggs.
What breeds handle winter best?
Chanteclers (Canadian-developed), Brahmas, Cochins, Orpingtons, Wyandottes, Plymouth Rocks. Avoid Mediterranean breeds (Leghorns, Minorcas) in prairie winters.
