Seizures are driven by issues of the brain, which present in the body's muscles.
Seizure sources:
Physical - concussion, brain damage, disease
Chemical - toxic items in the air, water, food or surfaces that the parrot comes in contact with, or a chemical imbalance. Both SilverSage and WilliamKenyum provide possible toxic sources that need to be eliminated as possible sources.
NOTE: Water based toxins and/or diseases are a possibility, which may require either filtering or boiling to minimize or eliminate.
As SilverSaga stated, your parrot needs a safe area to assure that Lura does not further harm herself. In addition, SilverSaga recommended that you clean your parrots cage and anything that Lura would commonly come in contact with. The goal here is to limit any 'chemical' (toxic) or disease based drivers in and around her cage.
The reason blood tests have been recommended by Aquila is that key levels of the primary markers provide an indication of the status of the body and whether it is fighting or dealing with disease, chemical imbalance, toxin or trauma. It may not tell what, but will provide an indication.
Not all Vets are comfortable at taking blood from a bird. In addition, what is needed may be in short supply and/or the equipment needed to conduct the test is not available. The fact that the Vet recommended more fruits and sunlight for seizures 'may' indicate that the Vet has little or no experience with birds.
At this point, the reality is that you are pretty much on your own. That does not mean that all is lost, only that you are going to have to be more proactive and education yourself:
Start taking notes that cause the onset of Luna seizures - when it starts, how long, what muscle groups are involved and which are not, when it starts to go away, what do you see that confirms that the seizure is easing. The more you do this the more detail you will have. At some point very quickly, you will become aware of when a seizure is beginning. At that point, you may note specific elements and/or events that increase the likelihood, shortens the seizure, or decease the likelihood of a seizure.
Learn more about seizures using the Internet. First, learn about human based seizures and than move on to parrots. The reason for starting with human based seizures is that it provides you a base to understanding the muscles involved and what part of the brain drives what muscles. This way you can then transfer that understand to your parrot as you research parrot based seizures. Also, humans have been dealing with seizures for long before modern medicine. There is a high likelihood that a family member or someone near your home or in your village has seizures, speak with them or their caregiver about their seizures. Speak about what helps and what does not.
See this as a knowledge base that will not only help Luna but will expand you and drive you to learn more.
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