The oldest living parrot is Cookie, a Major Mitchell's cockatoo (Cacatua leadbeateri) of Brookfield Zoo, Illinois, USA, who was at least 80 years 107 days old as of 15 September 2014.
Cookie’s exact age was unknown when he arrived at Brookfield Zoo in May 1934. His arrival was documented in a ledger dated May 1934, when he was estimated to be at least one year old. The zoo gave him a “hatch date” of 30 June 1933, which would make Cookie 81 years 77 days old.
Because the precise day in May was not documented, the age calculation in this record is taken from the final day of that month (although the parrot may have been a full 30 days older if his arrival had been on 1st May).
Comments below may relate to previous holders of this record.