Bird Health
Pet Bird Diet in the UK: Safe Foods
Published Last updated 4 min read
Quick answer
Feed pet birds a pellet-based diet with fresh vegetables, not seed alone — the RSPCA advises about three-quarters pellets and one-quarter fresh food for parrots, with seed as a small extra. Avocado, chocolate and caffeine are toxic and can kill. Change diets gradually with avian vet guidance.
Key takeaways
- No. According to the RSPCA, seed mixes are high in fat and low in calcium and key vitamins. Seed-only diets cause obesity, fatty liver disease and vitamin A deficiency. Seeds should be a small part of the diet only.
- Never. The RSPCA warns that avocado is highly poisonous to parrots and other pet birds — even small amounts can be fatal. Keep guacamole and avocado dishes well away from your bird.
- Chocolate is toxic to birds in any amount — the darker the chocolate, the more dangerous. Contact a UK avian vet immediately if your bird eats chocolate, and do the same for caffeine, alcohol, onion or garlic.
Why seed-only diets fail
According to the RSPCA, ready-made seed mixes are high in fat and low in calcium and vitamins A, D, K, E, biotin and B12. Birds pick out the fattiest seeds, and pet birds fly far less than wild ones. Seed-only diets lead to:
- Obesity
- Fatty liver syndrome
- Vitamin A deficiency (weakening skin, airways and immunity)
- Calcium deficiency
The pellet base — RSPCA ratios
| Food group | Parrots | Budgies, cockatiels, lovebirds | Canaries and finches |
|---|---|---|---|
| Complete pellets | ~three-quarters of the diet | Free access | Beneficial — introduce gradually |
| Fresh fruit and vegetables | ~one quarter, washed | Daily | Fresh washed greens (dandelion, chickweed, groundsel) |
| Seed | Small occasional treats | Some daily — no more than ~a tenth of the diet | Seed-based diets are traditional; improve with pellets and greens |
Safe fresh foods
According to the RSPCA, good choices include:
- Vegetables — carrots, broccoli, peas, sprouts, leafy greens
- Fruit — de-seeded apples, grapes, blueberries, pomegranate (remove pips and stones)
- Native berries — rowan and hawthorn; check before picking, as some native berries are poisonous
- Wash everything; serve at room temperature; remove uneaten fresh food the same day
Toxic foods — never feed
| Food | Risk |
|---|---|
| Avocado | Highly poisonous to birds — can cause sudden death |
| Chocolate | Toxic in any amount; darker chocolate is more dangerous |
| Caffeine | Coffee, tea, energy drinks — dangerous stimulant |
| Alcohol | Even tiny amounts can be fatal |
| Onion and garlic | Can cause anaemia and digestive damage |
| Fruit seeds and stones | Apple seeds, cherry and peach stones contain cyanide compounds |
| Salty, fatty, sugary snacks | Crisps, biscuits and fried food harm small bodies |
| Rhubarb leaves, mouldy food | Toxic; discard spoiled fruit |
If your bird eats any of these, contact a UK avian vet immediately — time matters with small birds.
Switching from seed to pellets
According to the RSPCA, diet changes take weeks or months and should be done carefully:
- Check with an avian vet first to confirm your bird is healthy
- Weigh every morning on digital scales and record it — any weight loss, contact your vet
- Watch droppings daily for changes in colour, amount or consistency
- Offer new food in short sessions — warmed and softened (pellets mashed in warm water), away from the cage, several times a day
- Let your bird see you eat it (or pretend to), and try different pellet shapes and brands
- Gradually reduce the old food only once the new food is being eaten reliably
Water and hygiene
- Fresh water changed daily — birds dunk food and droppings foul bowls fast
- Wash food and water bowls daily with hot soapy water
- Never leave wet or fresh food to spoil in the cage
When to see a vet
Book a UK-registered avian vet if your bird loses weight during a diet change, refuses all food, passes abnormal droppings, or shows fluffed feathers or lethargy. Poor diet underlies a large share of pet bird illness — an annual check is the chance to review yours.
Sources & further reading
Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.
PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-07-18).
- Budgie Care in the UK: Complete Guide
- Parrot Care in the UK: Complete Guide
- Canary Care in the UK: Complete Guide
- Bumblefoot in Pet Birds: UK Advice
- Bird Care in the UK
- Egg Binding in Birds
- Bird Hot Weather Safety UK
- Bird Moulting in the UK: Normal vs Not
Also see symptoms, symptom checker, and poison guide.
Frequently Asked Questions
- Is a seed-only diet OK for my bird?
- No. According to the RSPCA, seed mixes are high in fat and low in calcium and key vitamins. Seed-only diets cause obesity, fatty liver disease and vitamin A deficiency. Seeds should be a small part of the diet only.
- Can birds eat avocado?
- Never. The RSPCA warns that avocado is highly poisonous to parrots and other pet birds — even small amounts can be fatal. Keep guacamole and avocado dishes well away from your bird.
- What happens if my bird eats chocolate?
- Chocolate is toxic to birds in any amount — the darker the chocolate, the more dangerous. Contact a UK avian vet immediately if your bird eats chocolate, and do the same for caffeine, alcohol, onion or garlic.
- How do I switch my bird from seed to pellets?
- Gradually, over weeks. The RSPCA recommends short daily sessions offering warmed, softened new food, weighing your bird each morning, and watching droppings — with an avian vet's advice before you start.
- How much fresh food should a parrot get?
- According to the RSPCA, about one quarter of a parrot's diet should be washed fruit and vegetables such as carrots, broccoli, peas and de-seeded apples, with the rest mainly complete pellets.