What to Feed Chickens in the Winter | Winter Flock Diet

Cold weather changes everything for a backyard flock. A chicken’s body burns extra calories just to stay warm, and if the diet doesn’t keep up, egg production drops, feather quality suffers, and your birds can lose condition fast. The good news is that the shift is straightforward: increase volume, keep protein high, and use specific evening treats for overnight warmth. Here is exactly how to adjust their menu from November through March.

Why Winter Feed Volume Must Increase

Chickens maintain their body temperature by digesting food — the process of digestion itself generates heat. In summer, a hen eats about 0.25 pounds of feed per day; in winter, that jumps to roughly 0.38 pounds, a 50% increase. Feed is their furnace. Cut the fuel, and the furnace runs cold.

Do not reduce protein in winter. Feathers are mostly protein, and hens need quality protein to grow new feathers and repair the ones winter weather damages. Stick with a complete layer feed that carries 16–18% protein, and keep it as the backbone of every meal.

The Evening Scratch Grain Rule

Scratch grains — cracked corn, oats, or a commercial scratch mix — are the most effective supplement for cold nights. Cracked corn digests slowly and releases sustained heat through the darkest hours. One handful per hen, scattered in the bedding or on the ground about 30 minutes before roosting time, produces measurable overnight warmth.

The limit matters: treats including scratch, mealworms, and kitchen scraps must total less than 10% of the daily diet. Exceed that and you risk nutrient imbalances that reduce egg quality and increase feather-pecking. The 90-10 rule (90% complete feed, 10% treats) is non-negotiable over a full winter.

Best High-Energy Treats for Cold Weather

Variety keeps hens active and fills the 10% treat allowance with genuinely useful nutrients. These options deliver the most warmth per handful:

• Black oil sunflower seeds — high fat content for long-lasting energy; offer in moderation because they are rich.
• Dried mealworms or grubs — dense protein for muscle health and feather insulation; excellent on days when it will snow.
• Sprouted grains (lentils, mung beans, wheat) — soak, rinse, and let sprout 3–5 days indoors. Fresh greens are scarce in winter; sprouts deliver vitamins and enzymes your compost pile cannot.
• Warm oatmeal or unsalted split pea soup — steel-cut oats cooked with water make a warm, comforting snack that hens love in single-digit weather.
• Hardy vegetable scraps — carrot tops, broccoli stems, cooked squash, kale, and spinach all keep well and add moisture variety.

How to Keep Feed and Water from Freezing

Frozen water is dangerous — chickens cannot survive a day without liquid water. If your coop has electricity, a heated waterer base is the simplest solution. Without electricity, swap water twice daily and empty the waterer overnight. Insulated feeders help stop wet mash from freezing; metal or plastic feeders with roofs work well.

Store bulk feed in airtight, rodent-proof containers — metal garbage cans are ideal. Mice and rats love winter feed piles and will chew through plastic. Check feeders twice daily; hungry hens in cold weather need constant access.

Chickens also need free-choice grit in a separate container. Grit is the grinding stone in their gizzard; without it, whole grains pass undigested and the bird gets zero nutrition.

Common Winter Feeding Mistakes

• Skipping protein. Switching to a lower-protein feed in winter is wrong — protein needs stay high for feather maintenance. Keep 16–18% year-round.
• Feeding scratch every day. Scratch is a treat, not a meal. Daily scratch pushes the 10% limit fast and leads to obesity and feather-pecking.
• Switching feed overnight. Abrupt feed changes upset digestion. Transition over 7–10 days, mixing increasing amounts of new feed with the old one each day, as Purina Animal Nutrition recommends.
• Sealing the coop. Closing every crack traps moisture vapor from chicken breath and droppings. Wet bedding breeds respiratory illness and frostbite. Keep a small window cracked open or a ventilation gap near the roofline.
• Ignoring water. Hens drink less in extreme cold, but they still need fresh water daily to digest food and maintain body heat. Check waterers at least twice a day.

Egg Laying and Lighting in Winter

Hens naturally slow or stop laying as daylight drops below 14 hours. Do not stop feeding complete layer feed when eggs thin out — the feed still provides essential calcium and protein for the hen’s own health. If you want sustained egg production, artificial lighting (1–3 foot-candles at roost height) on a timer can extend the day to 14–16 hours. Introduce it gradually to avoid stressing the flock.

Toxic Foods: What Never to Feed

Some kitchen staples are dangerous to chickens. Avocado in any form, uncooked beans, onions, raw potato tubers or skins, and stone fruit pits (cherry, peach, plum) must stay away from the coop. A good rule: if it would be questionable for a dog or cat, it is likely off-limits for your hens.

Winter Feeding Checklist

Stick with complete 16-18% layer feed, bump volume to 1.5x summer portions, offer scratch grains in the evening only, keep fresh water liquid at all times, ventilate the coop, transition any new feed over 7–10 days, and remember that even non-laying hens need full nutrition through the cold months. A well-fed flock is a warm, healthy flock.