I need to know what kind of parrot you have. When you say it normally stays outside, do you mean out of it's cage but still in the house, or all the way outside, as in the yard? If so, is there an outside aviary or cage? Is your bird ever exposed to outside birds in any way? What do you feed her? Do you know how old she is? This extra information and anything you can add will help me to give you my best advice. Thanks, Patricia