Although they may occur anywhere, they most commonly are found involving the primary feathers of the wings. A feather cyst occurs when a growing feather is unable to protrude through the skin and curls within the follicle. As the feather continues to grow, the mass enlarges and a cheesy exudative material composed of keratin accumulates. Although feather cysts may be seen in all species, the highest incidence is in Blue and Gold Macaws and certain breeds of canaries. It is thought these feather cysts may be the result of an inherited predisposition - as in certain species of canaries or acquired as a result of infection or trauma involving the feather follicle.
Treatment consists of surgically removing the involved feather follicles.
If the follicle is just incised and the feather with its accumulation of keratin is removed, it will usually recur. Baldness Baldness is an acquired loss of feathers on the head. It is commonly seen in canaries. A hormonal imbalance and genetics are believed to be responsible. It is very important that the skin is biopsied to be sure that there is no underlying cause leading to the trauma and picking.