Some peahens start laying fertile eggs after their first birthday. Peacocks take more time to become mature than the peahens. Usually it takes about 3 years to gain maturity of a peacock. After three years their tail also matures.
Patients with disorders such as Parkinson's disease, Alzheimer's disease or multiple sclerosis may use a neurologist as their principal care physician. In a consulting role, a neurologist will diagnose and treat a neurological disorder and then advise the primary care physician managing the patient's overall health.
What does a neuropsychologist do? Neuropsychologists evaluate and treat people with various types of nervous system disorders. They work closely with doctors, including neurologists. Illnesses, injuries, and diseases of the brain and nervous system can affect the way a person feels, thinks, and behaves. Symptoms that may call for a neuropsychologist include: memory difficulties.