Birds get in an enormous amount of information from light.
Light tells birds when to sleep, wake up, breed, molt and if appropriate when they migrate
The single most important accessory for your bird is to add a full spectrum light bowl no more than 6 inches of the cage.
The bulb should be put on a timer providing 12 hours of light and 12 hours of darkness.
This helps them by providing an equatorial light cycle that they have come to expect instinctually after 99 million years.
Rick C. asks