If you are an African Grey owner you will be particularly interested to read John Courtney-Smith's article on Getting the most out of Avian UV-lighting in the November issue of Parrots magazine.
All parrots greatly benefit from UV-lighting but an African Grey's need for these rays is even greater and as well as explaining how to fit the lighting to get the greatest benefit, John also explains why African Greys need to bask longer than most other parrots.