Can Chickens Eat Avocado? No — It Can Poison Birds

Why avocado is dangerous for chickens

The problem compound is persin, found in avocado plants. The Merck Veterinary Manual states that ingestion of avocado fruit, leaves, stems and seeds has been associated with toxicosis in animals, that the leaves are the most toxic part, and that Guatemalan varieties are most commonly involved. The ASPCA warns that avocados are deadly for birds because persin is present in the skin and the fruit.

In birds the main target is the heart muscle. Merck notes that myocardial injury can be extensive, especially in birds. It also reports that chickens and turkeys seem more resistant than caged birds such as budgerigars, but more resistant is not the same as safe, and there is no amount anyone can call harmless.

No safe amount: keep it out of the run

Because toxicity varies with the variety, the part eaten and the bird, there is no serving size for avocado. UC Davis lists avocado first among foods to keep away from chickens, and Texas A&M names avocados among foods that are poisonous for them. The guidance is consistent: none at all.

That includes the soft flesh in guacamole, toast scrapings, peels and pits in the compost, and leaves dropped from a backyard avocado tree. If you grow avocados where chickens free-range, fence the tree and rake up fallen leaves and fruit. Keep the kitchen scrap bucket for the flock separate from general compost.

Treats go further scattered in a chicken run than piled in a dish, and a proper feeder keeps their complete feed, which should be most of what they eat, clean and dry.

What to do if your chicken ate avocado

Remove any remaining avocado and move the affected birds somewhere quiet with water. Note what was eaten, which part, roughly how much and when. Then call a vet who treats poultry, or a poison line: ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661. A consultation fee may apply.

Do not try home remedies or force fluids. Merck states that treatment is supportive and focused on managing clinical signs, which is a job for a vet. Acting early, while the bird still looks normal, gives the vet the most options.

Signs of avocado poisoning in birds

Merck describes affected birds as showing lethargy, labored breathing, loss of appetite and swelling under the skin of the neck and chest, and in severe cases death. In one case it reports, a small pet bird died within 48 hours of eating a modest amount of mashed avocado fruit.

Watch the whole flock over the next two days, not just the bird you saw eating. A hen that sits fluffed up, breathes with her mouth open or tail bobbing, refuses food or has a puffy neck or breast needs to be seen the same day.

Avocado and chicks

Chicks are small, so any toxic exposure is proportionally larger. They also eat whatever is dropped into the brooder, which makes avocado on kitchen scraps a particular risk for young birds.

Chicks need nothing but a protein-rich starter feed and clean water in their first weeks, according to UF/IFAS Extension. Keep all kitchen scraps, avocado above all, out of the brooder entirely, and call a vet promptly if chicks are exposed.

Safe treats to give instead

If you were hoping to share healthy fats, skip them: UC Davis advises avoiding fatty foods for chickens because they do not need much fat. Lean, fresh treats such as leafy greens, cucumber, zucchini, berries and chopped melon suit hens far better.

Keep treats to less than 10% of the diet, the rule of thumb given by UF/IFAS and Texas A&M, and serve them after the main feed. Other foods to keep out of the run include dried or raw beans, chocolate, onions, salty leftovers, rhubarb, stone-fruit pits, green potato parts and nightshade leaves.

This page is general information, not veterinary advice, and it cannot replace advice from a veterinarian who treats poultry.