Do Chickens Need a Coop Heater in Winter?

No for most large breeds to 0°F

Dry, draft-free, ventilated hens with liquid water handle cold via feathers. Cold + wet + wind = frostbite, not cold alone.

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Heat if: Seramas/bantams below 20°F, sick/molting, weeks below -10°F with past comb damage. Then panel only – see best heater. Never heat to 60°F – stops acclimation, worse if power fails.

Fix first: ventilation, water. External: UMN Extension.

What temp is too cold?Large breeds: -10°F sheltered ok. Bantams: 10-15°F stress. Wind + wet drops all thresholds 20°F.
Emily Rhodes — Vet tech, Vermont
Poultry health focus: dehydration, frostbite, nipple vs trough hygiene, ducks vs chickens. Translates vet guidance into keeper checklists.