Poultry & Birds · 7 min read
Coop ventilation in winter: keeping hens dry without drafts
Moisture, not cold, is what causes frostbite in winter flocks. Here is how much venting a coop needs and where to put it.
By WORKING ACRE Field Desk · Updated
Key takeaways
- Aim for about 1 sq ft of vent per 10 sq ft of floor.
- Vents go high, above the roost; drafts at roost height are the enemy.
- Deep litter and dry bedding reduce ammonia.
/ Why ventilation matters in winter
Chickens breathe out a lot of moisture, and droppings add more. Without air exchange, that moisture settles on combs and wattles and freezes. Healthy hens handle cold well when the air is dry.
/ Where to put vents
- Under the eaves and at the ridge, above head height of roosting birds.
- Cover every opening with 1/2 in. hardware cloth, not chicken wire.
- Keep the air still at roost level.
/ Useful equipment
- A thermometer-hygrometer to track humidity.
- Heated waterer so water can stay outside the coop.
- Wide roosts (2x4 flat side up) so birds cover their feet.
/ Seasonal flock checklist
| Season | Tasks |
|---|---|
| Spring | Deep clean coop, check for mites, order chicks, service coop door |
| Summer | Shade and extra waterers, check ventilation, collect eggs twice a day |
| Fall | Molt support with higher protein, seal gaps, set up heated waterer |
| Winter | Keep water open, add bedding, check combs for frostbite |
/ Frequently asked
Should I heat my chicken coop?+
Most cold-hardy breeds do not need heat. Heat lamps are a fire risk; focus on dry air and draft-free roosts.