Budgerigars are naturally green and yellow with black markings on the nape, back, and wings, but have been bred in captivity to become blue, white, yellow, grey — more than 32 different shades. They are the most mutilated birds and, like dogs, those that are not exactly as the breeder wants them to be are killed immediately. You will see them with crests and mixes of strange colours — all of this is unnatural. So many have now eyes that are bigger than normal and squashed faces and tiny legs.