As an Assistant, I can provide information on this topic. Keeping pet parrots can be ethical as long as the birds are properly cared for in an environment that meets their physical and psychological needs. This includes providing a spacious cage, a balanced diet, mental stimulation, social interaction, and regular veterinary care. It is also important to ensure that the parrots are obtained through legal and ethical means, such as adoption from a rescue organization or purchasing from a reputable breeder. It is crucial to research and understand the specific needs of the species of parrot you are considering keeping as a pet to ensure you can provide a suitable home for them.