Can Chickens Eat Onions?

Onions are root vegetables that are popular in culinary cooking, both cooked and raw. With their bitter taste, they are usually cooked in a meal, instead of being eaten raw. For humans, onions are safe to eat, but what if you want to feed some to your backyard chickens?

Can chickens eat onions? Yes, chickens can eat onions, including the peels. Onions offer a lot of nutrition that the chickens can benefit from. Due to their strong smell and taste, you may find that your chickens may not eat it raw onions. If that is the case, cook the onions first and you’ll have no problem with them eating it all.

Is It Healthy For Chickens To Eat Onion?

Onions are nutrient-dense, which means they are low calories but high in vitamins and minerals.

Below are some of the health benefits of onions if they are fed to the chickens:

Loaded With Antioxidants

Onions are an excellent source of antioxidants. Antioxidants are very important as it helps prevent free radicals from damaging the cells. Free radicals can come from the food the chickens eat or from exposure to radiation and tobacco smokes.

Boost Bone Density

The density of the bone is very important. Strong bones will allow the chickens to forage for foods, move about, and do other activities without any issues. If the chickens suffer from weak bones, more than likely they will die due to not being able to feed or support themselves.

Feeding them onions, especially red onions, will help strengthen their bones.

Improve Digestive Health

Onions are rich in fiber and prebiotics, which is needed for optimal digestive health. Feeding them onions will help prevent constipation and help with normal bowel movement.

Is Onions Bad For Chickens?

Onions fed to the chickens in moderation is perfectly fine and won’t affect their health. However, when chickens eat too many onions, then ic could be a problem.

Eating too many onions can be very harmful to them. The onions will cause hemolytic anemia (also known as Heinz anemia). This is a blood condition resulting in chickens having weak legs, lethargy, and an unclean look.

Therefore, if the onions are fed to them occasionally, you shouldn’t worry about Heinz anemia.

Can Chickens Eat Onions

Eggs And Taste

Hens that lay eggs that eat onions tend to lay eggs with an altered taste to it. Some people will notice a difference in the taste of their eggs, while others don’t. If you are feeding onions to the hens, expect the eggs to have a more onion taste to it.

The onions won’t affect the quality of the eggs in any way, just the taste of the eggs will be a bit different.

How To Feed Onion To Chickens

All parts of the onions are safe to feed the chickens. You can feed them the peels too. However, they are a bit tough for the chickens to eat so you’ll need to cut them into smaller pieces.

Below are some of the ways you can feed onions to the chickens:

Raw Onions

You can try feeding them raw onions, but there is a chance they might not eat it. The taste of the onions is very strong and it might prevent them from eating it.

Mixed With Their Feeds

If the chickens don’t eat whole onions, you can try mixing it in with their feeds. It’s best to dice them up into tiny pieces first before mixing it in with the feeds. That way, the chickens won’t be able to tell the difference and will eat it all.

However, the strong smell of the onions may prevent them from eating it. If that’s the case, cook the onions first and then mix it with the feeds.

Cooked Onions

This is the recommended method for feeding the chickens. When the onions are cooked, whether you’ve fried or grilled them, it will get rid of the strong taste and smell. Therefore, the chickens will have no problem eating them.

How Many Onions To Feed The Chickens

When it comes to feeding onions to the chickens, you should feed them in moderation. There are two reasons why feeding them that way is recommended. For one, onions don’t have the necessary nutrition to meet the chicken’s diet requirement. As discussed earlier, feeding them too many onions or only onions could cause Heinz anemia.

The second reason is that like all other vegetables, onions should only make up 10% of their entire diet. The rest should come in the form of quality commercial feeds. The feeds have been formulated with the right amount of nutrition to keep the chickens healthy.

Other Vegetables That Chickens Can Eat


Lettuce is great for chickens. They are thin and easy for the chickens to eat. There are many different varieties of lettuce available. One of them being the iceberg lettuce. These lettuce are not very nutritious, but they do have a lot of moisture in them. During the summer months, when it usually gets very hot, feeding them iceberg lettuce will keep them hydrated.


Spinach is one of the healthiest food on earth. This is due to their nutrient-rich content. Spinach is high in fiber and an excellent source of vitamin K, vitamin A, vitamin C, folate, and calcium. These leafy greens benefit the chickens greatly and they love to eat spinach as well.

Butternut Squash

Butternut squash is rich in nutrients and low in calories. This makes this squash an excellent treat to give the chickens. However, butternut squash is a starchy vegetable which means they are high in sugar. Feeding them butternut squash in moderation is recommended to avoid any health issues.


Cucumber is a good source of vitamin C and fiber while providing a small amount of vitamin K, magnesium, potassium, manganese, and vitamin A. All of these nutrients are great for chickens as they can benefit a lot from it.

All the fruits above should only be fed to the chickens as treat. They do not have enough nutrition to meet the chicken’s dietary requirements.

Related Questions

Can chickens eat onion rings?

Yes, chickens can eat onion rings. However, it’s best to not fry them if you’re planning to feed them onion rings. While it’s being cooked, the batter will absorb too much oil. This could cause health issues for the chickens that ingest too many foods that are high in oil.

Instead, baking the onion rings is the better choice as it won’t contain any oil.

Can chickens eat onion soup?

It’s safe to feed onion soup to the chickens. If you don’t clean up after the chickens after they eat the soup, onion soup is great to feed them. Simply place the onion soup into their feeding bowl and they will start to peck at the onions and eat it.

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