As bird owners, it's important to be aware of the diseases and disorders that can affect our precious pets. Early detection of illness is key to successful treatment in pet birds, and is indeed important to their survival in many cases.
Read my article on Common Diseases in Pet Birds for an overview of some of the most common illnesses that affect birds in captivity, and how to recognize their symptoms. If you notice your own bird exhibit any of these signs of illness or other uncharacteristic behavior, you should seek the attention of a qualified avian vet as soon as possible.
From Amy Shojai: "Cat aggression has many faces. Dealing with cat aggression goes beyond stopping cat fights. Understanding and identifying the different types of aggression, and the common causes behind of cat aggression, is vital in order to know how to deal with the problem and stop cat aggression."