Every chicken I have ever owned absolutely loved (loves) cooked potatoes. I remember my mother cooking up potato peels and mixing in regular chicken mash for them - I can still smell that stuff! We give ours baked potato skins, leftover mashed potatoes etc etc. I read somewhere that raw potato is not good for them, so mine only get cooked - if I am making it just for them I don’t add salt, of course. Also, sometimes we’ll hang a whole cabbage in the run, they go crazy for that. Answer from Nemleewhoever on reddit.com
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My Pet Chicken
mypetchicken.com › my pet chicken › faqs › can chickens eat onions?
Can Chickens Eat Onions? - My Pet Chicken
June 25, 2025 - Even cooked onions still contain harmful compounds, so it's safest to avoid feeding onions in any form, whether raw, cooked, or as food scraps. What happens if my chicken eats a little onion?
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Cackle Hatchery
cacklehatchery.com › cackle hatchery › chicken care › four kitchen scraps not to feed your chickens
Four Kitchen Scraps Not to Feed Your Chickens - Cackle Hatchery
January 2, 2025 - onion toxicity in birds include diarrhea, loss of appetite, listlessness, paleness, difficulty breathing, and red-tinged urates. Whether the onions are raw or cooked makes no difference, and poisoning can occur whether a chicken eats a lot of ...
Discussions

question about things that are harmful for chickens to consume.
Every chicken I have ever owned absolutely loved (loves) cooked potatoes. I remember my mother cooking up potato peels and mixing in regular chicken mash for them - I can still smell that stuff! We give ours baked potato skins, leftover mashed potatoes etc etc. I read somewhere that raw potato is not good for them, so mine only get cooked - if I am making it just for them I don’t add salt, of course. Also, sometimes we’ll hang a whole cabbage in the run, they go crazy for that. More on reddit.com
🌐 r/BackYardChickens
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6
October 16, 2023
Onions are poisonous to cows, chickens, and dogs.
Onions are poisonous in general. More on reddit.com
🌐 r/onionhate
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September 27, 2021
What human foods/scraps should you never feed chickens?
there aren't many honestly. you can find a lot of toxic food lists online. off the top of my head, avocado pits, chocolate, beans (especially uncooked), fern heads, cherry pits, and anything moldy, rotting, fermenting, or alcoholic. you also generally don't want to feed them a whole bunch of one thing (IE giant thing of stale rice, etc) there are also some landscaping plants that are toxic, it's good to look into those too. generally, chickens tend to be good about knowing what not to eat, but once they're conditioned to seeing you as a yummy treat source they become less discriminating about what they accept from you. More on reddit.com
🌐 r/BackYardChickens
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February 19, 2023
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PoultryDVM
chickendvm.com › poisonous › onion
Onions Poisoning in Chickens
If they are ingested in large enough quantities (more than 0.5% of the bird's body weight), onions can damage red blood cells and cause heinz body anemia. All forms of onion are potentially toxic--dehydrated, cooked, powder, raw and includes ...
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Fully Healthy
fullyhealthy.com › news › can chickens eat onions? the truth backyard keepers must know
Can Chickens Eat Onions? The Truth Backyard Keepers Must Know
November 12, 2025 - Focus on nutrition: A balanced ... never eat raw onions, so no. When they are in raw form, onions are even more dangerous than when they are cooked because they have more thiosulfate in them....
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Chicken Fans
chickenfans.com › home › can chickens eat onions? onion toxicity in chickens (2023 updates)
Can Chickens Eat Onions? Onion Toxicity in Chickens (2023 Updates) | Chicken Fans
December 18, 2023 - When chickens digest sulfoxides, ... absorbed in the intestines, where they form highly reactive oxidants. Cooking the onions does not reduce toxicity....
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Theeverydaymomlife
theeverydaymomlife.com › can-chickens-eat-onions
Can Chickens Eat Onions? Effects of Onions
June 19, 2023 - It is advisable to avoid giving chickens raw onions since raw onions inevitably contain higher concentrations of harmful compounds. Therefore, cooked onions are generally considered safer for chickens to consume than raw onions.
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The Homesteading RD
thehomesteadingrd.com › raise chickens
Don’t Feed These Foods to Your Chickens!
May 6, 2024 - This can lead to an initial response ... poor egg-laying ability. Onions (raw or cooked) are rich in an organosulfur compound called thiosulfinate, which breaks down into different types of disulfide....
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Reddit
reddit.com › r/backyardchickens › question about things that are harmful for chickens to consume.
r/BackYardChickens on Reddit: question about things that are harmful for chickens to consume.
October 16, 2023 -

I’m an avid waste-hater and vegetable stock maker, i hate wasting my carrot peels and onion skins and love making soups, so i use the scraps for stock, I’m wondering if i can feed the cooked scraps that made the stock to my chickens?

Is there even any nutritional value left in the skins, would it even be worth it for them? they taste good though..

I also season the stock and am wondering if any of the seasonings can be harmful, here’s a list of ingredients, advice would be super helpful, i don’t want to throw the scraps out (even though i’ve already given them a second life, i know)

Veg: onion skins, onion, carrot skins and ends, potato peels, broccoli, courgette, pepper tops and middles, sprouts, aubergine, cabbage

herbs/ spices: Rosemary, oregano, thyme (plus their stems) whole peppercorns, cumin seeds, bay leaves.

I think that’s everything? i don’t use much, if any salt so that’s not an issue, if there is something harmful (i imagine peppercorns and cumin seeds) i’ll leave them out next time i make stock.

Thanks so much everybody! i’m still very new to this :)

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Backyardchickenchatter
backyardchickenchatter.com › home › can chickens eat onions?
Can Chickens Eat Onions?
April 2, 2020 - But this can only happen if you let them enjoy this treat in small amounts and occasionally. Most importantly, you should never make onions their main diet. Cooked onions are safe to feed your birds because most of the harmful compounds get ...
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The Happy Chicken Coop
thehappychickencoop.com › home › blog › can chickens eat onions? – everything you need to know
Can Chickens Eat Onions? - Everything You Need to Know
August 14, 2023 - Mostly, it is the all-around onion used in cooking different recipes. It is dry and has a strong flavor among other onions. However, it also contains higher sulfur, which is harmful to your flocks, so feeding them to your chickens is not advisable.
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New Life On A Homestead
newlifeonahomestead.com › so, can chickens eat onion?
So, Can Chickens Eat Onion?
August 19, 2023 - Onions are unsafe for chickens in any form. Since we are on the topic of cooking, make it a point to never feed chickens anything that has been prepared with onions as an ingredient, even if it is something they could otherwise have to eat.
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The Chicken Den
thechickenden.com › home › chicken feed › can chickens eat onions? the truth about this common kitchen veggie
Can Chickens Eat Onions? Risks, Safe Alternatives, and More
February 15, 2025 - It’s still safer to avoid feeding chickens any form of onions, whether raw or cooked ... Even small amounts of onion—anything over 0.5% of a chicken’s diet—can start to cause health problems. It’s best to avoid onions entirely rather than trying to find a safe amount. Are all parts of the onion harmful to chickens, like the peel or leaves?
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Chickenrise
chickenrise.com › can-chickens-eat-onions-cracking-the-onion-code
🔥🐔 Hot Topic Alert: Can Chickens Feast on Cooked Onions? – ChickenRise
November 12, 2023 - Alright friends, after all my ramblin’ let me give y’all the plain truth: yes, chickens can have cooked onions now and again if done sparingly. A couple slivers here or there mixed into their feed is likely to cause no harm. Just don’t go overboard! Too much onion will cause a world of ...
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BackYard Chickens
backyardchickens.com › forums › raising backyard chickens › feeding & watering your flock
Safe to feed raw and cooked Onions to Chickens? | BackYard Chickens - Learn How to Raise Chickens
August 12, 2009 - I'm not sure if it is safe but I wouldn't because it will give the eggs and meat (if they are meat birds) an off taste. The same is true for garlic and fish meal. ... My birds turn their noses up at onions. ... I read somewhere it was not good for chickens or dogs.
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Laysomeeggs
laysomeeggs.com › can-chickens-eat-onions
Can Chickens Eat Onions: The Hidden Dangers You Need to Know, 2025
February 12, 2025 - You might think, “It’s just ... chickens’ blood and organs. And don’t get fooled into thinking cooking them makes it better—cooked onions are still dangerous!...
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ROYS FARM
roysfarm.com › home › can chickens eat onions?
Can Chickens Eat Onions? | ROYS FARM
November 13, 2025 - Onions contain a compound called thiosulphate. And this thiosulphate is toxic for the chickens. So, avoid feeding your chickens onions and any other parts of the onions either raw or cooked.
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The Hen's Loft
thehensloft.com › home › can chickens eat onions? (answer backed by research)
Can Chickens Eat Onions? (Answer Backed By Research) - The Hen's Loft
March 9, 2020 - They concluded that onions improve the efficiency of feed and increases body weight in chickens being raised for meat. Common sense tells us we wouldn’t sit down and eat an entire bowl of raw onions. Chances are, your stomach would hurt, you would have heartburn, probably followed by diarrhea. So why does feeding onions get such a bad rap?
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Pet Educate
peteducate.com › home › chickens › can chickens eat onions? [what about feeding the peels?]
Can Chickens Eat Onions? [What About Feeding The Peels?]
December 5, 2025 - Cutting them up finely and just providing plain raw and chopped onion does not usually go down so well either. Cooked onions are another alternative, which can be safe if they are not deep fried in oil.
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Ecowiser
wiser.eco › home › food › eco-nourish › can chickens eat onions? 5 best backyard chicken-keeping tips
Can Chickens Eat Onions? 5 Best Backyard Chicken-Keeping Tips - Ecowiser
August 8, 2024 - So, if you are asking whether I can give onions to my chicken, that completely depends on you. But, before you hop on to provide them with some, let’s understand why chickens can’t eat onions regularly. See, a chicken’s digestive system is different from that of humans. Meaning that food that is good for humans can be bad for chickens.
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Reddit
reddit.com › r/onionhate › onions are poisonous to cows, chickens, and dogs.
r/onionhate on Reddit: Onions are poisonous to cows, chickens, and dogs.
September 27, 2021 -

Cows: Feeding cull onions (A llium cepa) to livestock is practised in onion growing regions around the world. While sheep are able to tolerate onions in their diet, cattle are susceptible to toxicity. Onion poisoning has recently been reported in dairy cows in New Zealand (Carbery, 1999). Given the recent seasonal abundance of onions available for feeding to stock, it seems timely to draw attention to this syndrome.

Chicken: Hens should never be fed food scraps that contain anything high in fat or salt, and do not feed them food that is rancid or spoiled. Specific types of food that hens should not be fed include raw potato, avocado, chocolate, onion, garlic, citrus fruits, uncooked rice or uncooked beans

Dogs: Onions contain a toxic principle known as N-propyl disulfide. This compound causes a breakdown of red blood cells, leading to anemia in dogs. The toxin causes oxidative damage to your dog's red blood cells by attaching to the oxygen molecules in your dog's red blood cells.

Just some interesting paragraphs from some articles I found to be very informative.