Can Ducks Eat Bananas?

Yes. Bananas are safe for ducks, soft enough for any bird to manage, and on every duck treat list we could find. They are also the sugariest fruit on our list after grapes, so the answer comes with a portion size attached.

The short answer

Metzer Farms, a California duck hatchery, names bananas alongside strawberries, blueberries, grapes and apples as “amazing treats for your ducks”, and the Open Sanctuary Project’s duck diet guide lists “Bananas” flatly among appropriate treats with no caveat at all. Metzer’s avoid list does not mention them; neither does Open Sanctuary’s page on things that are toxic to ducks. For a fruit that is nothing but soft flesh, that is the expected verdict — there is no pit, no seed and no toxic green part.

What is in a banana for a duck

Per 100 grams of raw banana, the US Department of Agriculture’s reference data give 74.9 g water, 89 kcal, 12.2 g sugars, 1.1 g protein and 2.6 g fibre, with 358 mg potassium, 8.7 mg vitamin C and 5 mg calcium. Compare that with a strawberry at 32 kcal and 4.9 g sugars, or a tomato at 18 kcal, and the banana’s place is clear: it is the dense one. A banana is about three quarters water and an eighth sugar, with a little more protein than most fruit but nowhere near the 16 to 20 per cent a duck’s complete feed provides.

The potassium is the number people quote. Chewy’s veterinary contributors note that “bananas are especially rich in potassium, which is an essential nutrient for chickens that supports muscle and nerve function”, and that is true of ducks too — but a bird on a complete feed is not short of potassium, so it is a nice property rather than a reason to feed them.

How to feed bananas to ducks

Peel it, slice it into coins or chunks, and hand it over — or mash it. Banana is the one fruit soft enough that a duck can take a slice with little risk of it lodging, which makes it a good first fruit for a bird that has never been offered a treat, and a good vehicle for a crushed supplement if a vet has prescribed one. It also browns and turns to mush fast in a water tub, so give it on a dish rather than floated.

Quantity is where bananas need discipline. The poultry extension rule is that all treats together stay under a tenth of the diet — Colorado State University Extension: “Treats should make up no more than 10% of their daily diet” — and Purina’s rule of thumb is that “treats should not exceed 2 tablespoons” per bird. Two tablespoons of mashed banana is roughly a quarter of a medium fruit. For a duck, a few slices, not the fruit, and not daily: Metzer’s warning is that treats “should not be a large part of your ducks’ daily feed. Doing so can and will unbalance their nutritional intake from their regular feed.”

The peel

The flesh is the treat; the peel is optional and mostly ignored. Chewy’s veterinary contributors say chickens “can eat a very small amount of banana peels”, that peels “can be tougher than the fruit itself”, and that if you offer them you should “cut them into smaller pieces and make sure they’re clean and free of pesticides and chemicals” — with organic bananas “a safer choice if you want to feed the peel”. Most ducks will not bother with a peel and there is no reason to push it. If yours do, small pieces, washed, and not the whole thing.

When bananas are a problem

Overripe is fine; mouldy is not — ducks are unusually sensitive to mould toxins, and a black, split banana with any fuzz on it is for the bin. Dried banana chips are concentrated sugar, often fried and sometimes sweetened, and are not a duck food. Banana bread, banana with yoghurt or custard, and anything sweetened bring in salt, sugar and dairy that a duck should not have. And the everyday risk is the boring one: a flock that gets banana often enough starts holding out for it and picks at its pellets.

Ducklings

Not in the first weeks. A duckling’s starter feed is balanced for the niacin it needs to grow straight legs, and treats dilute it. Once they are on grower feed, a teaspoon of mashed banana is a safe first taste. The week-by-week plan is in raising ducklings.

The rest of the fruit bowl: strawberries are the lightest option, apples need coring, grapes need halving. Every food we have checked is in the can-ducks-eat checker, and the diet the treats sit on top of is in what do ducks eat and what to feed ducks.