Deep litter: let the coop bedding work for you this winter
Instead of stripping the coop every week, the deep litter method lets bedding build up and break down in place. Done well, it makes its own heat. Done carelessly, it makes ammonia. The difference is management.
What deep litter actually is
Start with a few inches of carbon-rich bedding on the coop floor. When it gets soiled, stir it and add a fresh layer on top rather than cleaning out. Over weeks, the lower layers begin to compost in place while the birds work the surface.
Why Extension suggests it
The University of Maryland Extension gives two reasons. Deep litter insulates birds from a cold floor, and as microbes break the litter down, the process generates its own heat. In a cold snap, that composting warmth is free help.
Keep the bedding log with the flock. PawLine keeps dated notes per animal or pen: when you added bedding, when you stirred, any ammonia smell. A small log tells you whether your routine is keeping up. Get PawLine on iPhone or Get PawLine on Android.
The catch: air and moisture
Minnesota Extension is clear that air exchange matters more as bedding builds: ventilation prevents the moisture build-up and ammonia that poor air quality brings, and condensation combined with cold is what leads to frostbite. Deep litter is not an excuse to seal the coop. Keep vents open above the birds, fix waterer spills fast, stir the litter, and add dry bedding when the surface stays damp. If you smell ammonia at bird level, the litter needs attention today, not this weekend.
One safety note from Minnesota
UMN Extension pairs its winter advice with an electrical warning: keep wires away from poultry, water and flammable litter, use extension cords only short term, and never use them to run power to your coop. If the coop needs real power for winter, that is a job for a professional electrician, not a hardware-store workaround.
UMN’s winter list also keeps nest boxes on the routine: replace nesting materials as they become soiled, broken down or sparse. Clean nest material matters even while the floor litter is intentionally building up, and it takes minutes at the same chore visit.
Start small this week
You do not have to commit the whole coop on day one. Start with a proper base layer now, keep the waterer on a spill-catching stand, stir when you add bedding, and watch the surface each morning at chore time. The litter tells you quickly whether your moisture balance is right: it should look dry and friable on top, never caked or wet.
Sources
Sources checked October 21, 2026. Suggested routines and note formats are editorial organizational ideas.
- Winter weather and small flocks
University of Maryland Extension - Caring for chickens in cold weather
University of Minnesota Extension