In essence, when a bird is under stress, its whole body is affected. Chronic stress can harm the nervous system, thereby causing digestive and intestinal upsets. When we talk about stress in birds, we must also invariably talk about the immune system. Immune deficiencies are one of the problems commonly found with breeding and pet birds, and stress often plays a major role in this disorder. The immune system is essentially made up of white blood cells called B cells and T cells.
B cells produce antibodies that aid in the attack against bacterial or viral infections.
T cells are responsible for cellular immunity against a variety of illness and disease, such as fungi, parasites, and viruses. By implementing the above items, along with a clean, comfortable environment, we greatly improve our bird's constitution, help relieve stress and build better function of its immune system. You should investigate and detect any subtle or not so subtle disturbances, changes, or threats in your bird's environment that may cause stress. Think carefully about how you can improve or change any of the things you believe may be negatively affecting your bird's life. In addition, knowing your bird's history, such as its previous diet and care, is vital for properly understanding its current stress symptoms.