Can chickens and ducks eat the same things? Mostly yes, and that overlap makes mixed flocks a lot easier to feed than most new homesteaders expect. Both birds are omnivores that thrive on grains, fresh produce, and the occasional bug, but their protein needs and grit requirements pull apart in ways that matter for their long-term health. A duck fed like a chicken can develop crooked wings, and a chicken fed like a duck can slow down on eggs. Once you understand where the diets meet and where they split, feeding both species under one roof gets a lot simpler.
What You’ll Learn
What Chickens Need To Thrive
A hen’s bowl should carry whole grains or commercial feed for 50 to 70 percent of her daily calories. Corn, wheat, barley, millet, and oats form a solid base, and most keepers lean on a commercial feed blend built around 20-21% protein to keep hens laying steadily. Beyond that base, hens need protein for about 10 to 15 percent of their diet, and cooked eggs, mealworms, bugs, seeds, and commercial protein blends all fit the bill nicely. Egg production drops fast when protein runs short, so this slice of the diet matters more than it looks.
Fruits and vegetables should fill roughly 20 to 40 percent of a chicken’s diet. Kale, berries, melon, broccoli, spinach, squash, and sprouts all disappear fast in a chicken run. Calcium matters just as much as protein, and hens need free-choice access to oyster shell, crushed limestone, or even dirt and sand grit to keep eggshells strong and bones dense. Many keepers stock a dish of oyster shells right next to the feeder so hens can help themselves whenever they need extra calcium. Treats like cracked corn, birdseed, pumpkin seeds, grapes, peas, yogurt, cheese, sprouts, and greens are fine in moderation, and clean water refreshed every day rounds out a healthy diet.
What Ducks Need To Thrive
Ducks lean even harder on pellets and grain, with about 75 percent of their diet coming from waterfowl feed, mixed corn, wheat, barley, and oats. Fresh produce should make up 15 to 20 percent of a duck’s diet, and chopped kale, chard, lettuce, squash, and berries are all good choices. Protein sits lower for ducks than for chickens, at only about 5 to 10 percent, and ducks naturally hunt down grubs, bugs, slugs, and worms while foraging. You can round out that protein with mealworms, grasshoppers, soldier fly larvae, crickets, minnows, tadpoles, or a commercial duck feed formulated for waterfowl.
Ducks also need insoluble flint grit to grind up food in their gizzard, since they swallow much of their food whole. Water matters even more for ducks than it does for chickens, since they drink it, swim in it, preen with it, and use it to regulate their body temperature. As we’ve noted before, ducks use more water than chickens do, so their water source needs changing daily to stay clean. Never feed bread to ducks. It fills them up without giving them any real nutrition, and it can lead to poor growth and joint problems over time.
Where Chicken And Duck Diets Overlap
Both birds are omnivores that enjoy a wide, varied diet, and this is really the heart of the question can chickens and ducks eat the same things. As we’ve covered in our guide on what chickens and ducks can eat together, neither species strictly needs animal protein to survive, though both benefit from bugs, larvae, or a quality feed for steady egg production. Grains, seeds, and pelleted feed form the bulk of both diets, and fresh produce adds vitamins, minerals, and fiber that keep birds healthy year round.
Calcium-rich grit helps both species digest their food properly, though the exact type differs between them. Treats are fine for both birds in moderation, but they should never replace a balanced diet built on grains, produce, and the right level of protein. If you keep this overlap in mind, feeding a mixed flock feels a lot less complicated than it first appears.
Where Chicken And Duck Diets Differ
Protein is the biggest gap between the two species. Meat breeds like Pekins need only 5 to 10 percent protein, while most laying chickens do best on 10 to 15 percent, especially if you want strong egg production from your hens. Produce proportions differ too. Ducks prefer fibrous vegetables like kale, chard, and lettuce, while chickens do better with chopped fruit and tender greens mixed into their diet.
Feed type is another split you should watch closely. Chickens need a 20-21% protein commercial feed to keep laying well, while ducks actually do better on a lower 16 percent protein medicated starter or waterfowl grower. Treats diverge too, since chickens go after sprouts, berries, pumpkin seeds, and mealworms, while ducks would rather forage for slugs, grubs, tadpoles, frogs, small fish, and insects in the mud. Grit composition rounds out the list of differences: chickens need calcium-rich oyster shell, but ducks need insoluble granite or flint grit instead.
How To Feed Chickens And Ducks Together
If you’re raising chickens and ducks together, start with a base diet of commercial waterfowl or game bird feed around 16 to 18 percent protein rather than standard layer feed, which runs too high in protein for ducks. Free-feed thin-hulled grains like wheat, barley, and cracked corn, since both birds handle these well without digestive trouble.
A few simple habits keep both species healthy:
- Set out separate grit tubs: oyster shell for your chickens and granite for your ducks, placed far enough apart that each bird finds its own.
- Rotate produce through the week: leafy greens, berries, and melon for chickens a few days, then fibrous greens like kale, chard, and lettuce for ducks on other days.
- Offer chickens cooked eggs or mealworms on the days your ducks get their veggie mix, so hens still get enough protein.
- Sprinkle species-specific treats in separate areas of the run so each bird eats what it actually needs.
- Watch feeding time closely, since chickens can outcompete or bully ducks for protein-rich foods if you don’t spread things out.
You’ll find that a little planning at feeding time goes a long way toward keeping both species calm and well fed. Once you settle into a rhythm, this routine barely takes any extra effort each day.
Health Issues To Watch For
Chickens fed too little protein often see their egg production drop within days, and hens without enough oyster shell calcium can develop weak eggshells or thinning bones over time. Bored or underfed chickens sometimes turn to feather pecking or aggression toward flock mates, so keep an eye on their behavior as much as their feed intake.
Ducks face a different set of risks. Angel wing is a wing deformity that gets worse with rapid growth and too much dietary protein, so keeping duck protein around 5 percent helps prevent it. According to poultry nutrition specialists, ducks also need steady calcium, vitamin D, and phosphorus alongside proper grit to avoid metabolic bone disease. Because ducks tend to be docile, they can get picked on by more assertive chickens at feeding time, so give them enough space to eat without competition injuries.
Frequently Asked Questions About Feeding Chickens And Ducks Together
Can chickens and ducks eat the same things every day?
Yes, for the most part. Both birds can share grains, produce, and pelleted feed as a daily base, but you should still offer separate grit and watch protein levels so neither species gets too much or too little.
What feed should I buy if I keep both chickens and ducks?
A waterfowl or game bird feed around 16 to 18 percent protein works well for a mixed flock. It gives ducks a safe protein level while still supporting your chickens, especially when you supplement hens with extra protein treats a few times a week.
Why can chickens eat oyster shell but ducks cannot?
Oyster shell is calcium grit meant to strengthen eggshells, and chickens need it in larger amounts than ducks do. Ducks need insoluble granite or flint grit instead, which helps grind food in the gizzard rather than adding calcium.
Is it safe to feed bread to ducks or chickens?
No. Bread offers almost no real nutrition and fills up a bird’s stomach without giving it the protein, vitamins, or minerals it needs. Stick to grains, produce, and protein sources like bugs or mealworms instead.
How do I stop my chickens from bullying my ducks at feeding time?
Feed treats and protein sources in separate spots around the run, and give ducks their own space away from the main feeder. Ducks are generally more docile, so spreading out feeding stations keeps chickens from crowding them out.
A mixed flock does best when you treat the shared parts of the diet as your foundation and the differences as fine-tuning. Build meals around grains, produce, and a moderate-protein feed, then split off grit and protein sources so each bird gets what its body actually needs. Walk out to your run this week and check what’s in the feeder and the grit dish. A few small adjustments now will keep your hens laying steadily and your ducks growing strong for years to come.
