Pet lovers are being warned against a cut-price scam which could leave them with an "ex-parrot" on their hands.Trading standards officers across the country have received a catalogue of complaints worthy of the famous Monty Python sketch. In each case, exotic birds sent to people who responded to internet or newspaper advertisements have died soon after arrival. In the 1969 “Dead Parrot Sketch”, Mr Praline, played by John Cleese, returns a Norwegian Blue to a pet shop within half an hour protesting it “has ceased to be”. The shopkeeper, played by Michael Palin, tries to convince him the parrot...