[Breed-dependent anomalies in ornamental birds]. / Zuchtbedingte Anomalien bei Ziervögeln.

ABSTRACT

Following a definition of the terms pet bird and domestication, and a description of important mechanisms which may have played a role during domestication, a short review is given on the various changes that occurred and have been used selectively by humans changes in body size, skin and feathers, skull, metabolisms, and the central nervous system including behavior and disturbances of behavior. Implications for animal welfare are considered.