Many seizures are considered to be a normal occurrence in birds including the Cockatiel. A bird that is seizing may fall from his perch, go into convulsions or even appear disoriented. The cause or trigger for a seizure is not always immediately known. However, there are numerous conditions that can be part of the cause. For instance, toxin poisoning, dehydration, vitamin deficiency, trauma, brain damage, stress, infectious diseases with neurological symptoms, brain tumor, end-stage liver disease, hyperthermia, heat exposure, diabetes, hyperglycemia, and calcium deficiency can possibly trigger a seizure. If your Cockatiel has experienced any of the triggers listed above, talk to your vet. Not all Cockatiels with conditions such as those above will have a seizure, but it’s a good idea to have him checked by your vet Scottsdale, AZ. Many birds recover from the seizure activity with very few, if any, lasting side effects.