No. Chocolate contains theobromine and caffeine, both toxic to birds. The darker the chocolate, the more dangerous — but no amount is safe.
Chocolate is toxic to every parrot, and cockatiels are no exception. And because cockatiels are so small, even a tiny amount is a dangerous dose. Never offer it — see the emergency steps below if your bird already had some.
Birds metabolize theobromine and caffeine far more slowly than humans. Even a small piece can cause vomiting, hyperactivity, tremors, seizures, and cardiac arrhythmia in a parrot. Dark and baking chocolate carry the highest doses, but milk chocolate and cocoa drinks are dangerous too.
Remove all remaining food from the cage, note what and roughly how much was eaten, and call an avian vet or an animal poison control hotline immediately. Do not wait for symptoms — early treatment makes the difference.
See the full chocolate guide or the Cockatiel diet guide for more.
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