Do Ducks Eat Grass? 5 Excellent Benefits

Do ducks eat grass? A lot of duck owners are curious about whether ducks eat grass. The answer is yes and no. While ducks eat grass, they don’t necessarily rely on it as their primary food source.

Instead, ducks usually forage for food in the water or on land. This includes eating insects, small fish, and other aquatic creatures. Ducks also eat various plants, including grasses, sedges, and aquatic plants. So, while grass is a part of a duck’s diet, it’s not the only thing they eat.

This article will explore what ducks eat, how much grass they need, and whether you should provide grass for your ducks.

do ducks eat grass

Do ducks eat grass?

It’s a common question many people ask, and the answer is not as simple as you think. While most ducks will nibble on grass occasionally, some breeds primarily eat aquatic plants or don’t eat plants at all.

For example, the White-Faced Whistling Duck eats aquatic plants like duckweed and water lilies. Meanwhile, the Common Eider duck doesn’t eat plants; its diet consists primarily of mollusks and crustaceans.

Ducks eat grass for a variety of reasons. For one, grass is a good source of nutrients. It’s also fairly easy for ducks to digest. Additionally, eating grass helps ducks clean their bill and keep their gizzard strong. Lastly, some ducks enjoy the taste of grass.

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The benefits of eating grass for ducks

In the wild, ducks will forage for food, and grass is a big part of their diet. While most people think of ducks as eating mainly insects and small fish, the truth is that grass makes up a significant part of their diet. Here are five benefits of feeding your duck a diet that includes grass.

Packed with nutrients

Just like us, ducks need a variety of nutrients to stay healthy. And while grass may not look like much, it contains a wealth of vitamins and minerals essential for proper growth and development.

For example, grass is a good source of vitamin A, which is important for vision and immunity, and vitamin K, which is necessary for blood clotting.

Helps with digestion

Ducks don’t have teeth, so they can’t chew their food very well. Their digestive system has to work a little harder to break down what they eat. Eating grass can help by adding bulk to their diet and stimulating the production of digestive enzymes.

And since ducks absorb more nutrients from plants than animals, getting those extra plant-based nutrients can make a difference in their overall health.

Good for a healthy bill

Eating grass helps keep a duck’s bill healthy. A duck’s bill is sensitive, and if it becomes damaged, it can be painful for the duck. Eating grass helps remove any built-up plaque on the bill and keeps it clean and healthy.

Bill health is important because a duck’s bill is used for eating and preening and keeping their feathers clean.

An enjoyable snack

In addition to being good for their health, many ducks enjoy eating grass. It’s a refreshing and nutritious snack that gives them the energy they need to play and explore. Plus, it’s a natural way to keep their appetite under control.

Good for feathers

The nutrients in grass help keep feathers healthy and strong. Ducks preen their feathers with their beaks to keep them clean and free of dirt and parasites, and the oil from their preening helps waterproof their feathers.

A diet rich in nutrients helps ensure that your duck’s feathers will be healthy and lustrous.

Things to watch out for when feeding grass to ducks

duck in grass

While grass is healthy and nutritious food for ducks, there are a few things to watch out for.

Pesticides and herbicides

If you live in an urban area, the chances are that your backyard grass has been treated with pesticides or herbicides at some point. These chemicals can be harmful to ducks, so it’s important only to feed them grass that has been certified organic.

If you’re unsure whether your grass is safe for ducks, it’s best to be safe and don’t feed it to them.

Mold and fungus

Moldy or fungus-infected grass can make ducks sick, so it’s important to inspect the blades of grass before feeding them to your feathered friends. If you see any mold or fungus, throw the blade of grass away. It’s not worth taking the risk.

Lawn fertilizer

Lawn fertilizer contains high nitrogen levels, which can harm ducks if ingested in large quantities. So, if you decide to feed your ducks grass from your yard, ensure that it hasn’t been treated with fertilizer recently.

Once the fertilizer has had a chance to break down (usually around two weeks), it will be safe for ducks to eat.

How often should ducks eat grass?

Ducks typically eat various aquatic plants, insects, small fish, and crustaceans in the wild. However, when kept as pets, ducks can also benefit from eating grass. Grass is a good source of fiber and nutrients and can help keep ducks’ digestive tracts healthy.

Ducks can eat grass daily, and they usually consume about 1-2% of their body weight in grass daily. If you have ducks as pets, you can let them free-range in your yard or provide them with a small patch of grass to graze on.

Either way, monitor their grass intake, so they don’t overindulge and become sick.

How to prepare grass for feeding to ducks

ducks eating

Many duck owners in the United States choose to feed their ducks a fresh grass diet. While ducks will naturally eat grass when allowed to free range, some duck owners prefer to cut the grass themselves and offer it to their ducks as a treat or supplement.

If you are considering feeding your ducks fresh grass, there are a few things you should know about how to prepare it.

Mow the lawn at a higher setting. Ducks prefer longer grass, so mow your lawn at a higher setting than you normally would. This will also help discourage geese from eating the grass.

Cut the grass into small pieces. Cut the grass into small pieces so your ducks can easily eat it. You can cut it by hand or use a lawn mower with a bag attachment. Be sure to dispose of any clippings that are too long.

Offer the grass in moderation. Offer your ducks fresh grass in moderation, as too much can cause GI issues. Start by offering a small amount and increase gradually over time as your ducks get used to it. You can offer fresh grass daily or several times per week.

Do baby ducklings eat grass?

Yes, baby ducklings can eat grass but usually prefer other foods. Ducklings usually start to eat grass when they are two weeks old. At first, they will only peck at the grass and might not consume it.

As they get older, ducklings will start to eat more grass. By three weeks old, most ducklings will eat a fair amount of grass daily. If you raise ducklings, you can offer them grass from your yard or a small patch of grass to graze on.

Just be sure to monitor their intake and offer fresh, clean water.

What other plants can ducks eat?

green grass

There are several other plants that ducks can eat that provide them with the nutrients they need to stay healthy and happy. Here are some of the best options.

Water lettuce

This aquatic plant is a great source of fiber for ducks, and it’s also packed with vitamins A and C. Ducks love eating water lettuce, so it’s a great way to keep them entertained and ensure they’re getting the nutrients they need. Plus, it’s easy to find water lettuce at most pet stores.

Dandelion greens

Dandelion greens are another good option for ducks. They’re high in vitamins A and C, calcium, and iron. Ducks typically love eating dandelion greens, making them a great addition to their diet. Just wash them thoroughly before feeding them to your ducks, as they can sometimes contain pesticides.


Kale is another leafy green that’s packed with nutrients ducks need. It’s high in vitamins A, C, and K, calcium, and iron. Kale is also a good source of fiber, which helps keep ducks’ digestive systems healthy. As with dandelion greens, wash kale thoroughly before feeding it to your ducks.

How to give ducks a healthy and balanced diet

As any duck owner knows, feeding ducks is more than just tossing a few pellets into the water and calling it good. Ducks need a well-rounded diet that includes vegetation and protein to stay healthy and happy.

In this section, we’ll give you tips on creating a healthy and balanced diet for your ducks.


One of the most important things you can do for your ducks is to provide them with plenty of fresh vegetation. Duck stomachs are very similar to ours because they need fiber to function properly.

Vegetables like lettuce, kale, and carrots are all great choices for duck food. You can either grow your own vegetables specifically for your ducks or purchase them from a local farmer’s market or grocery store.

Just be sure the vegetables you give your ducks are free of pesticides and other harmful chemicals.


In addition to vegetation, ducks also need protein in their diet. This can come from either animal or plant sources. Animal protein sources like worms, bugs, and small fish are all great options for duck food.

You can let your ducks free range to find their own animal protein or purchase it from a pet store or online retailer specializing in duck food.

Plant-based protein sources like beans, peas, and lentils are also good options for duck food. These can be purchased from any grocery store.


Lastly, don’t forget to give your ducks plenty of clean water to drink. Ducks need clean water not only to stay hydrated but also to help them digest their food properly. A good rule of thumb is to give your ducks one gallon of water per day for every four ducks.

Do ducks eat grass – final thoughts

So, do ducks eat grass? The answer is yes – but not all ducks rely on it as their primary food source. Instead, most ducks typically forage for food in the water or on land.

Some breeds of ducks primarily eat plants, but these are mostly aquatic plants like duckweed and water lilies. And finally, there are some breeds – like the Common Eider duck – that don’t eat plants at all.

Jill Taylor Happy Farmyard

Jill Taylor

Jill is a full-time homesteader who enjoys learning about sustainable living and practicing self-reliance. She'll most likely be found tending to her many animals including chickens, ducks, goats, and alpacas. You find out more about her on LinkedIn.