Can chickens eat onions?

Onions – Onions contain a toxin substance called thiosulphate that destroys red blood cells. When excessive amounts are fed to chickens, it can cause jaundice or anemia in your hens or even death. Dried or undercooked beans – Raw, or dry beans, contain a poison called hemaglutin which is toxic to birds. read more

FACT: Chickens can eat onions, chives and garlic in small quantities, occasionally. Sufficient quantities of onion and garlic can be harmful to chickens, causing hemolytic anemia, aka: Heinz anemia, a blood condition resulting in chickens with weak legs, listlessness and a disheveled appearance. read more

Yes, they can eat onions and some do eat them. Most chickens will try to eat onions if they are offered but soon give up. The green onion and chives are readily eaten by chickens hunting around in the garden. read more