A Perth man has been fined $2500 for ripping the head off a kookaburra outside a tavern last month.

WA Police and RSPCA WA began an investigation after patrons at the Parkerville Tavern said they witnessed Perth man Daniel Welfare become enraged when 'Kevin the Kookaburra' took food from his plate.

Witnesses said Mr Welfare grabbed Kevin and ripped his head off in front of shocked onlookers, including children.

At the time of the incident the tavern owners said they were in “disbelief over the barbaric attack”.