No — we put starfruit on the do-not-feed list. It carries both high oxalic acid and a neurotoxin (caramboxin) that the kidneys must clear, and birds are tiny enough that the safety margin is gone.
Keeper's noteThis is one of the 'looks harmless, isn't' tropical fruits. There are plenty of safe exotic options — dragon fruit, guava, papaya — so there's no reason to gamble on starfruit.
Why starfruit is dangerous for parrots
Starfruit is notorious in human medicine for poisoning people with even mildly reduced kidney function — its caramboxin is a neurotoxin healthy kidneys filter out, and its oxalate load stresses them further. There's little avian research, but given how small parrots are and how the toxin works, the conservative and widely shared call is to avoid it entirely.
My parrot already ate some — what now?
Remove all remaining fruit, note how much was eaten, and call an avian vet promptly — watch for weakness, tremors, or changes in droppings. Early supportive care matters because the risk is kidney and neurological.