The grey parrot and the race against Africa’s wildlife extinction

The number of African greys has plunged to 1% of past levels, conservationists warn. But it is just one of a host of animals and plants on the continent whose future will be debated by more than 180 nations in Johannesburg this weekPerry, a five-year-old African grey parrot, is for sale on a well-known pet trade website for £750. She looks in good condition with her large black bill, red tail and white mask and her owner says she can whistle the tune of Flower of Scotland, does a passable