What do geese eat? Grass, mostly. Geese are the most committed grazers in the poultry yard, and a mature bird on decent pasture can take 80 percent or more of its daily intake from grazing alone. Everything else you provide, the grain, the greens, the grit and the winter hay, exists to fill the gaps that pasture leaves at particular points in the year. Get the grass right and geese become the cheapest livestock on the place. Get it wrong and you end up buying feed for a bird that was built to feed itself.
Key Takeaways
What Do Geese Eat as Their Main Diet?
Geese are functional herbivores. Their bills carry serrated edges that work like shears, clipping grass close to the ground, and their digestive tract is set up to pull nutrition from a high-fibre, low-energy diet that would leave a chicken starving. Given good pasture, an adult goose will spend most of its waking hours doing nothing but grazing.
They are also selective in a way that surprises people. Geese strongly prefer young, tender grasses and will work an area over repeatedly rather than move on to coarser growth. They tend to leave broadleaf plants alone, which is exactly why they earn their reputation as weeders between orchard rows and around established berry bushes. That preference cuts both ways: a pasture grazed down past about 2 inches stops regrowing usefully and the birds start losing condition even though the ground still looks green.
Insects, snails, and worms round out the picture, but only just. Adult geese take them incidentally while grazing and they contribute maybe a tenth of daily protein. Geese are not the pest patrol that ducks are, and if you want a bird to clear slugs you want ducks. Our guide to raising ducks and geese together covers how the two species split that work when you keep both.
How Much Pasture Does a Goose Need?
Plan on 20 to 40 geese per acre of decent pasture through the growing season, with the lower end for heavy breeds like Embden and Toulouse and the upper end for light, active foragers like Chinese. On a backyard scale that translates to roughly 100 square feet per bird as a working minimum, and 200 square feet if you want the grass to keep up.
The number that matters is not how much grass the geese eat, it is how fast it regrows. Watch the sward height rather than the calendar. Once the birds have taken an area below about 2 inches, move them or start supplementing, because grazing past that point damages the crown of the plant and the pasture recovers slowly. Overgrazed ground turns to bare dirt, then to mud, and your feed bill climbs while parasite pressure rises. This is the single most common feeding mistake on small properties, and it is really a stocking mistake wearing a feeding mistake costume.
If you can rotate at all, do. Even two paddocks alternated every couple of weeks will hold a sward that a single trampled run cannot.
What to Feed Geese Season by Season
Goose feeding is not one diet, it is four. The birds’ requirements swing hard across the year and the supplemental feed should swing with them.
Spring: Breeding and Laying
Start increasing feed about a month before you expect laying, which for most breeds means late winter as daylight lengthens. Laying geese need more protein and considerably more calcium than idle birds. A waterfowl breeder or layer pellet at 16 to 18 percent protein works well, offered alongside free-choice crushed oyster shell so hens can take the calcium they need without it being forced on the gander.
Spring grass is rich and geese will gorge on it, so the supplement here is genuinely supplemental. Watch body condition rather than feeding to a fixed schedule. Our breakdown of when geese lay eggs maps the timing by breed, which is worth reading alongside this because feed should lead laying by several weeks, not follow it.
Summer: Peak Grazing
This is the cheap season. Good pasture in summer covers nearly everything an adult goose needs and many keepers cut supplemental grain to a token handful in the evening, purely as a way of getting the birds to come in and be counted. That habit is worth keeping even when the feed is not needed nutritionally.
The thing to watch in summer is water rather than feed. Geese cannot swallow dry feed without water and will not eat well if the supply runs out or gets too fouled to use.
Autumn: Building Condition
As grass growth slows, step the grain back up. Autumn is when birds destined for the table are finished, and when breeding stock should be going into winter carrying good condition without being fat. Overweight geese breed poorly and lay poorly the following spring, so this is a balance rather than a straightforward push. Cracked corn is useful here because the higher energy content helps birds hold condition as temperatures drop.
Winter: When the Pasture Is Gone
Winter is the pinch point and the season most new keepers underestimate. Once pasture dies back, you are the entire diet. Budget 6 to 8 ounces of grain or pellets per bird per day, and offer good quality grass hay free choice. Geese will pick through hay for the leafy material and it keeps the gut working the way a grazing diet does.
- Offer whole or cracked corn, wheat, and oats, either mixed or fed alongside a waterfowl pellet.
- Keep grass hay available free choice. Second-cut is softer and better accepted than coarse first-cut.
- Add greens where you can. Cabbage, kale, and chard are all taken readily and break the monotony.
- Keep water liquid. Geese cannot drink ice, and a bird that cannot drink will not eat.
- Feed in the morning so birds have the day to digest and generate heat overnight.
The cooperative extension system publishes detailed waterfowl nutrition guidance that is worth reading before your first winter, including this overview of feeding geese covering requirements by age and production stage.
What Do Goslings Eat?
Goslings are a different animal nutritionally and getting their first eight weeks right decides whether you end up with sound adult birds. Start them on an unmedicated waterfowl starter at 20 to 22 percent protein, free choice, then step down to a 15 to 16 percent grower at around three weeks. Medicated chick starter is not appropriate: goslings eat more feed by body weight than chicks and can take in a harmful dose of the coccidiostat.
Niacin is the one thing people miss. Waterfowl need substantially more niacin than chickens, and standard chick feed does not carry enough. A deficient gosling develops bowed legs and a reluctance to walk, and by the time it is obvious the damage is often permanent. If you cannot source a proper waterfowl starter, add brewer yeast at roughly one tablespoon per cup of feed, or niacin to the drinking water.
Watch for angel wing, where the wing tip twists outward instead of lying flat. It is caused by the wing growing faster than the supporting structure, driven by too much protein and energy too fast. Cut the feed back at the first sign of the wing lifting and there is a window in which it corrects. Once it sets, it is permanent. Goslings can start grazing almost immediately and should have access to short tender grass from the first week, which does as much for their gut as any bagged feed.
What Not to Feed Geese
The list of genuinely dangerous foods is short, but a couple of items on it are things people offer with the best intentions.
- Bread, crackers, and other refined carbohydrate. Filling, nutritionally empty, and a contributor to angel wing in goslings.
- Onions and large amounts of garlic. Both can damage red blood cells in poultry.
- Avocado. The flesh and pit contain persin, which is toxic to birds.
- Raw dried beans. These contain a lectin that is seriously toxic until properly cooked.
- Green potato, potato leaves, tomato leaves, and rhubarb leaves.
- Chicken layer feed as a staple, because of the niacin shortfall and the calcium load.
- Anything mouldy. Waterfowl are as vulnerable to mycotoxins as any other bird.
Grit deserves a mention on the other side of the ledger. Geese have no teeth, so the gizzard does the grinding, and it needs small stones to do it. Birds on open ground usually pick up enough themselves, but any goose spending significant time on grass alone or in a confined run should have insoluble grit offered free choice. This is separate from oyster shell, which is a calcium supplement rather than a grinding aid, and the two are not interchangeable.
Feeding Geese Alongside Other Poultry
Mixed flocks complicate feeding because the species need different things. Geese need more niacin than chickens and less calcium than laying hens, and a single feeder of layer pellets serves neither well. The practical fix is a waterfowl or all-flock feed as the base, with oyster shell offered free choice so laying hens self-select the calcium they need.
Physical separation helps too. Geese are large and will push smaller birds off feed, so a low feeding station the geese cannot get their heads into keeps chickens fed. If you are running a mixed flock, our guides on keeping geese and chickens together and raising geese in your backyard cover the housing and space side of the same problem.
Feeding geese well comes down to managing grass first and the feed bag second. If the pasture holds, the birds largely feed themselves for two-thirds of the year and your job is to top up protein before breeding and carry them properly through winter. If the pasture does not hold, no amount of bagged feed makes geese the economical bird they are supposed to be, and the honest answer is fewer birds rather than more grain. Walk the ground before you buy the feed.
Frequently Asked Questions About What Geese Eat
What Do Geese Eat in the Wild?
Wild geese eat grasses, sedges, aquatic plants, roots, grain left in harvested fields, and berries. They are almost entirely herbivorous as adults, taking insects and snails only incidentally while grazing. Goslings eat proportionally more insects than adults because they need the extra protein to grow.
Can Geese Eat Chicken Feed?
Not as a staple. Standard chicken layer feed is too low in niacin for waterfowl and can leave goslings with permanent leg problems. It also often contains added calcium at levels unsuitable for non-laying birds. Use an unmedicated waterfowl feed, or supplement chicken feed with brewer yeast at roughly one tablespoon per cup.
What Vegetables Can Geese Eat?
Lettuce, cabbage, kale, chard, cucumber, peas, corn, and shredded carrot are all safe and readily taken. Avoid onions, avocado, raw dried beans, and anything from the nightshade family such as potato leaves and green potato skin. Chop vegetables small, because geese swallow whole and can choke on large pieces.
Why Should You Not Feed Bread to Geese?
Bread fills a goose up without feeding it. It is high in carbohydrate and almost devoid of the protein, calcium, and vitamins waterfowl need, so birds that fill up on bread eat less of what actually sustains them. In growing goslings the rapid energy load contributes to angel wing, which twists the wing tip outward permanently once it sets.
How Much Do Geese Eat Per Day?
An adult goose eats roughly half a pound to one pound of dry matter a day, though most of that comes free from pasture in the growing season. When grass is gone, budget around 6 to 8 ounces of supplemental grain or pellets per bird per day, adjusted by breed size and body condition.
