Best Diet for Chickens: What Backyard Chickens Should Eat Every Day

Backyard chickens do best when most of their daily calories come from a complete commercial ration made for their age and job. Chicks need starter feed, growing birds need grower feed, and hens that are actively laying eggs need a layer ration. This matters because protein, calcium, and energy needs change as birds mature. A laying hen uses a large amount of calcium every day to make eggshells, while a young bird needs more balanced growth nutrition and should not be fed a high-calcium layer diet.

For many backyard flocks, the simplest plan is also the most reliable: keep a quality pelleted or crumbled feed available every day, provide clean water, and use extras as small add-ons rather than the main meal. Leafy greens and some vegetables can be a healthy supplement, but they should not crowd out the balanced ration. Scratch grains, dried mealworms, kitchen scraps, and fruit are popular, yet they are not complete foods and can dilute important nutrients if fed too often.

A practical rule for pet parents is the 90/10 approach. Around 90% of the diet should be complete feed, and no more than 10% should come from treats or produce. Laying hens may also need free-choice oyster shell for extra calcium, while birds eating anything other than pellets or crumble may need insoluble grit to help grind food in the gizzard. If your flock includes mixed ages, ask your vet which feeding setup fits your birds best, because one feed may not be safe for every chicken in the coop.

Feed quality matters too. Buy feed in the original bag from a reputable source, store it in a cool, dry, rodent-proof container, and avoid old, moldy, damp, or insect-damaged feed. Poor storage can lower vitamin quality and increase the risk of toxins or spoilage. If you want to use a homemade ration, talk with your vet or a poultry nutrition professional first, because even small recipe errors can lead to long-term deficiencies.

For an average adult laying hen, a good starting point is about 0.1 kg, or 1/4 pound, of complete feed per day. Some birds eat a little less and some eat more depending on breed, weather, activity, and whether they are laying consistently. Chicks eat much less, while meat-type birds may eat nearly twice as much as an adult layer. If your chickens free-range, they may snack on insects and plants, but they still need a balanced ration available.

When you offer extras, keep them small. A useful guideline is that treats should stay at 10% or less of the total daily diet. For a hen eating about 1/4 pound of feed daily, that means treats are often only a couple of tablespoons total per bird per day. Vegetables like leafy greens can be offered regularly in modest amounts. Fruits, scratch grains, bread, pasta, corn, and dried mealworms should be more limited because they are less balanced and can displace protein, vitamins, and minerals.

Calcium and grit are different from treats. Laying hens often do well with free-choice oyster shell offered separately, so they can take what they need without forcing extra calcium on non-laying birds. Insoluble grit is most helpful when chickens eat whole grains, forage, or table foods; birds eating only commercial crumble or pellets may need less. Fresh water should be available at all times, since dehydration can quickly reduce feed intake and egg production.

If you are unsure how much your flock is truly eating, measure what goes into the feeder and what is left after 24 hours for several days. Sudden increases or drops in intake can be an early clue that something is off. Your vet can help you adjust the feeding plan for bantams, heavy layers, broody hens, molting birds, or mixed-age flocks.

Poor nutrition in chickens often shows up gradually. Early signs can include weight loss, slower growth, reduced egg production, thin or soft eggshells, dull feathers, poor molt quality, and lower activity. Birds may also start crowding feeders, picking at unusual objects, or showing changes in droppings if the diet is unbalanced or if feed quality has declined.

More serious concerns include weakness, lameness, soft bones, dehydration, pale combs, diarrhea, crop problems, or a sudden drop in appetite. In young birds, the wrong feed can interfere with growth. In older laying hens, too little calcium can contribute to fragile shells and bone loss, while feeding layer feed to immature birds can raise the risk of kidney damage. Moldy or spoiled feed can also cause illness and should never be offered.

See your vet promptly if several birds stop eating, egg production drops sharply, shells become consistently thin, or you notice weakness, trouble walking, swelling, or ongoing diarrhea. See your vet immediately if a chicken is collapsed, breathing hard, unable to stand, or may have eaten a toxic food such as chocolate, avocado, alcohol, caffeine, heavily salted foods, or moldy scraps.

Nutrition problems can look like infection, parasites, reproductive disease, or toxin exposure, so diet should not be the only thing you consider. If you can, bring photos of the feed bag, a list of treats and supplements, and notes on how much each bird is eating. That gives your vet a much clearer starting point.

If you want to add variety without unbalancing the diet, the safest option is still a life-stage-appropriate complete feed as the main meal. For laying hens, that usually means a layer pellet or crumble. For chicks and juveniles, use starter or grower feed instead of guessing with scratch grains or kitchen scraps. This gives your flock the best chance of getting the right protein, vitamins, and minerals every day.

For treats, think of produce as a side dish rather than the base of the diet. Good lower-risk options in small amounts include leafy greens, chopped lettuce, kale, spinach, escarole, and small portions of vegetables. These can add enrichment and moisture without replacing too much balanced feed. If your hens are laying, offering oyster shell separately is often safer than adding random calcium supplements to all birds.

If you want a foraging-style setup, ask your vet about using measured amounts of complete feed plus supervised greens, pasture time, or a hanging vegetable toy for enrichment. Birds eating whole grains or lots of table foods may also need insoluble grit. Avoid relying on homemade rations unless they are professionally formulated, because nutrient gaps are common and may not show up until birds are already affected.

Foods to avoid include chocolate, avocado, alcohol, caffeine, highly salted foods, and spoiled or moldy feed. Large amounts of fruit, scratch, bread, pasta, and dried insects are also poor daily staples. If you want to change feeds, do it gradually over about a week to reduce digestive upset and help you spot problems early.