No. Birds metabolize alcohol very poorly — even a few sips can rapidly depress a parrot's organ systems and kill it.
Keeper's noteThe classic accident is a parrot sampling an open glass at a party. If birds are out, drinks stay covered — assign a 'bird bouncer' if you have to.
Why alcohol is dangerous for parrots
Alcohol depresses the central nervous system, and in an animal weighing 30–1000 grams the dose in a single sip is enormous. Intoxicated birds lose coordination, become lethargic, and can die from respiratory depression or liver damage.
My parrot already ate some — what now?
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.