Foods That Are Toxic to Pet Birds

Quick answer

The main foods that are toxic to pet birds are avocado, chocolate, caffeine (tea, coffee, cola, energy drinks), alcohol and xylitol. Close behind are onion and garlic, salty or fatty snacks, fruit stones and apple seeds, raw dried beans, mushrooms and mouldy food. Birds are small and fast to absorb toxins, so even a little can be serious. If your bird eats any of these, call an avian vet straight away instead of waiting for symptoms.

Why birds are so sensitive

A budgie weighs around 30–40 g (about 1–1.4 oz), and a cockatiel not much more than 100 g (3.5 oz). A nibble that would mean nothing to a person can be a large dose for a bird that size. Birds also have a fast metabolism and tend to hide illness until they're quite sick, so by the time you notice signs, a poisoning may be well advanced.

Most accidental poisonings happen at home, when a bird is out of the cage near people eating, or when a family member shares food from a plate. Knowing the list is half of prevention. The other half is keeping birds off tables and away from the kitchen.

The most dangerous foods

Avocado

Avocado is the best-known bird toxin. The plant contains a substance called persin, and every part can be poisonous: the flesh, skin, stone and leaves (the leaves are the most toxic). Small caged birds such as budgies, canaries and cockatiels appear especially sensitive.

Signs can include weakness, fluffed feathers, difficulty breathing, loss of appetite, swelling under the skin of the neck and chest, and sudden death. Heart damage can develop over 24–48 hours. Guacamole and avocado toast count. Keep it out of the bird's reach entirely.

Chocolate

Chocolate contains theobromine and caffeine. In birds it can cause vomiting, diarrhoea, a racing heart, tremors, seizures and death. Dark and baking chocolate are the most concentrated, but no type is safe.

Caffeine

Coffee, tea, cola, energy drinks, coffee grounds and tea leaves all contain caffeine. It can cause hyperactivity, a fast or irregular heartbeat and cardiac arrest. Never let a bird drink from your cup.

Alcohol

Alcohol depresses a bird's organs and nervous system. Even small amounts in drinks, desserts or fermented fruit can cause loss of coordination, breathing problems and death.

Xylitol

Xylitol is a sweetener found in sugar-free gum, sweets, some peanut butters, baked goods and toothpaste. It is very dangerous to dogs. Its effects in birds are less studied, so the safe advice is to keep any xylitol-containing food away from birds completely.

Foods that cause harm, especially with repeated feeding

Onion and garlic. Raw, cooked or powdered, these contain sulphur compounds that can damage red blood cells and cause anaemia. They also irritate the mouth and crop. Watch for hidden onion and garlic in curries, stews, sauces and stock.

Salty snacks. Crisps, salted nuts, crackers, popcorn with salt and many processed foods contain far more sodium than a small bird can handle. Too much can cause excessive thirst, dehydration, kidney damage and death.

Fruit stones and apple seeds. Seeds and stones of apples, pears, cherries, peaches, apricots, plums and nectarines contain compounds that can release cyanide when chewed. The fruit flesh is fine in moderation; just remove the seeds and stones.

Raw dried beans. Uncooked dried beans contain a natural toxin (a lectin called haemagglutinin). Beans that have been properly soaked and well cooked are generally safe; raw or undercooked ones are not.

Mushrooms. Some wild and cultivated mushrooms can cause digestive upset or liver damage. Many keepers simply avoid them.

Mouldy food. Old seed, damp bread and peanuts (especially in the shell) can carry moulds that produce toxins and can also cause fungal infections. Throw out anything damp, musty or past its date, and store seed in a cool, dry, sealed container.

Fatty, fried and sugary food. Not poisonous in small amounts, but regular helpings of chips, fried snacks, sweets and buttery food lead to obesity, fatty liver and other illness.

Dairy. Birds lack the enzyme to digest much lactose. Large amounts of milk can cause diarrhoea. A tiny piece of hard cheese now and then is usually tolerated.

Leaves and stems of tomato, potato and other nightshades. Ripe tomato flesh is not poisonous but is acidic, so offer it rarely if at all. Leaves, stems and green or sprouting potatoes are best avoided.

What birds can eat instead

You don't need to fear fresh food. A healthy diet for most pet birds includes pellets, plenty of vegetables and some fruit. Good choices include leafy greens, carrot, broccoli, bell pepper, peas, sweetcorn, squash, apple (seeds removed), pear (seeds removed), berries, mango and pomegranate. Wash produce well to remove pesticide residues and remove leftovers after a few hours. For species-specific diets, see our budgie care guide or bird care guide.

Not food, but just as deadly

Fumes from overheated non-stick (PTFE) pans and some oven linings can kill birds within minutes, as can smoke and aerosol sprays. Keep birds out of the kitchen whenever anything is cooking. Heavy metals such as lead and zinc in old paint, jewellery and cage parts are another common cause of poisoning.

What to do if your bird eats something toxic

1. Remove the bird from the food and take away anything left.
2. Work out what and how much it ate, and roughly when. Keep the packaging.
3. Call an avian vet or an animal poison helpline straight away, even if the bird seems fine.
4. Keep the bird warm and quiet in its cage or a carrier while you arrange to be seen.
5. Don't try home remedies. Don't try to make the bird vomit or give oil, milk or salt water. These can make things worse.

A vet may give supportive care such as fluids, medicines to protect the gut or heart, and treatment for seizures. Treatment depends on the toxin and the bird; follow your vet's instructions and dosing closely. A pet first-aid kit with your vet's number and a small carrier ready saves time in an emergency.

When to see a vet

Contact an avian vet immediately if your bird has eaten avocado, chocolate, caffeine, alcohol or xylitol, even if it looks well, or if it shows any of these signs:

• difficulty breathing, tail bobbing or open-mouth breathing;
• fluffed feathers, weakness or sitting on the cage floor;
• vomiting or regurgitating, or very watery or discoloured droppings;
• shaking, wobbling, falling off the perch or seizures;
• swelling around the neck or chest;
• sudden quietness, sleepiness or loss of appetite.

In Pakistan

Many households share tea with family birds or let them pick from plates of salty snacks, fried foods and rice dishes cooked with onion and garlic. All of these are risky. Mango and pomegranate are popular and fine in small amounts. Keep birds out of the kitchen, especially when frying or using non-stick pans, and away from the smoke of stoves and heaters.

If you're bringing home a new bird, ask the seller what it has been eating so you can keep its diet consistent. You can browse verified bird listings on Paalo.