Two subspecies of African grey parrot were previously recognised: Psittacus erithacus erithacus, sometimes known as the red-tailed African grey parrot or the Congo African grey parrot, and Psittacus erithacus timneh, also known as the Timneh African grey parrot (2) (8). However, P. e. timneh is now believed to be a separate species, the Timneh parrot (Psittacus timneh) (2). A separate population of African grey parrots on the island of Príncipe in the Gulf of Guinea was previously considered to be a third subspecies, Psittacus erithacus princeps, but is now included with P. e. erithacus (4) (9).