Parrots in Australia have been falling out of trees with symptoms similar to drunkenness. Birds have been struck down with a mystery illness. They show signs similar to human drunkenness, losing all coordination before passing out. They then cower in their cages when they wake up and recover. The problem appears to be seasonal with most of the lorikeets recovering within a few weeks and falling ill again the same time the following year. So far nobody is sure what is causing the mystery illness although it is thought it might be down to a plant that they are eating.