Behavior/Health Concerns:  Golden-mantled rosellas love to chew, so provide plenty of destroy toys. Some golden-mantled rosellas are prone to obesity and being nippy. They are also susceptible to bacterial infections and psittacosis. Golden-mantled rosellas are usually housed one pair per cage because they do not make good neighbors with other birds, even of their own species. If breeding golden-mantled rosellas, provide several choices of nesting boxes because they prefer to select their own nest. Once they have chosen a nesting location, the additional boxes may be removed.