The Head Keeper at Sewerby Zoo has a joke, "what is the difference between a species of Australian parakeet and a small duck with attitude?" Answer, "One is a Cockatiel, and the other is a cocky Teal."
And there's more as Jimmy Cricket would say. "What is the difference between a highly coloured pheasant of the Himalayas and a net for catching an elderly relative?" "One is a Tragopan, and the other is a 'trapogran'."
