The gouldian finch (erythrura gouldiae) in health and disease

The Gouldian Finch (Erythrura gouldiae) is a very popularly kept passerine species within aviculture. Its popularity has resulted in it being almost domesticated with many color mutations having been established around the world. Despite its secure captive status, this species is suffering from a serious decline in numbers in its native habitat in Northern Australia. Excessive cattle grazing and altered fire regimes are thought to be key factors in this decline. Infection with the parasitic mite, Sternostoma tracheacolum, is thought to be of secondary importance. In captivity, despite its popularity, it has the reputation of being delicate and susceptible to many diseases. A range of viral, bacterial, mycotic, protozoal, helminthic, and arthropodal agents and metabolic disorders have been identified and implicated as contributing to the illness and death of many Gouldian Finches. The presence of many diseases such as mycobacteriosis, cryptosporidiosis, microsporidiosis, and avian gastric yeast which are commonly considered as secondary pathogens is discussed. The importance of suitable housing and diet, decreasing environmental stressors, and optimizing hygiene is also stressed.