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Toxic and Dangerous Foods for Chickens
By The Coop Team ยท Updated July 3, 2026
Quick answer
Chickens should never eat avocado pits and skins due to persin toxin, raw or dried beans because of lethal phytohemagglutinin, and green potatoes that contain solanine. Other hazardous foods include rhubarb leaves and chocolate, which are also toxic to chickens.
Key facts
- Toxic food example 1
- 1 avocado pit
- Toxic food example 2
- 50% phytohemagglutinin content in raw beans
- Toxic food example 3
- 10 grams of solanine per 100 grams of green potatoes
- Toxic food example 4
- 0.1% theobromine in chocolate
- Toxic food example 5
- 2 weeks pesticide restriction
Foods to Never Feed Chickens
Never feed chickens the following items due to their toxic and dangerous nature:
- Avocado pit and skin (contains persin toxin; the flesh in tiny amounts is debated but not worth the risk).
- Raw or dried beans of any kind (contains phytohemagglutinin, which is lethal; cooking neutralizes it).
- Green potatoes and green potato peels (contain solanine).
- Raw potato in bulk.
- Tomato and eggplant leaves and stems (part of the nightshade family).
- Rhubarb leaves (contain oxalic acid).
- Onion and garlic in large quantities (can cause hemolytic anemia; small culinary amounts are fine).
- Moldy anything (mycotoxins are one of the top silent killers).
- Chocolate (contains theobromine).
- Coffee grounds and tea bags (contain caffeine).
- Heavily salted foods (chickens have no way to shed excess sodium).
- Alcohol.
- Citrus in large amounts (debated, but most chickens ignore it anyway).
- Apple seeds and stone fruit pits in bulk (contain cyanogenic glycosides).
- Raw meat that has spoiled.
- Dried or raw beans.
- Uncooked rice in huge quantities (fine when cooked).
Additional Hazards
Also, keep chickens away from:
- Lawn clippings that have been sitting and heating up.
- Treated wood shavings (cedar oils irritate the airway).
- Anything sprayed with pesticide or herbicide within the last two weeks.
Monitoring Chicken Health
If a chicken eats something questionable and acts fine within 24 hours, they almost always are.
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