Elongated swellings involving feather follicles, feather cysts are usually found under the bird’s wing (but can be found anywhere). Blue and Gold Macaws are the birds most likely to suffer from this disorder. Treatment of feather cysts is best handled with surgery, for if the feather follicle not removed, the problem will usually recur.

Feather Picking

Feather-picking is a common behavioral disorder for birds; however, it is imperative to rule out physical causes first. Lesions can cause birds to pluck out their own feathers, in which case the skin will need to be biopsied to determine the reason.

Mites

One of the most common afflictions of pet birds, mites affect both feathered and unfeathered skin. Lack of treatment of mites can lead to serious disfigurement, arthritis, loss of feathers, itching, weight loss, and secondary bacterial infection. Skin scrapes and, in some cases, biopsies will reveal the parasites.

Xanthomas

Appearing as yellow or orange dimpled patches of skin, xanthomas are made up of lipids and the accumulation of cholesterol. Diets that are high in fat may be a contributing factor to these deposits, but little else is known about them currently.

Ulcerative Dermatitis

Ulcerating, oozing, red skin is characteristic of ulcerative dermatitis, which forms a vicious cycle. With the affected area being itchy and swollen, the bird scratches at it, causing it to become more irritated and itchy. Ulcerative dermatitis can be caused by wounds, diabetes, previous traumas, and certain parasites. For treatment, use a topical antibiotic and give the wound a chance to heal by placing a collar on the bird.