yeah the vet has never thought something is wrong with him, and when we take him to the pet store to get his nails clipped they say that he is very different and that hes probley a mutation. Yep kesh baths himself generally once a week if not more, and nope we have no smokers in the house, it it started happening when we bought him, when we first saw him in the shop he had a few brown splotches over him but nothing major and when we bought him, he just progressively became more browner. we feed him a mixture of seeds, with dried corn, and like nuts in there from the grocery store, it is a parrot mix.