Aviculture
Aviculture is the practice of keeping and breeding birds, especially of wild birds in captivity, and including poultry, in controlled conditions, normally within the confines of a cage or an aviary. Some reasons for aviculture are: breeding birds as a hobby, a business like a zoo, or sometimes for research and conservation purposes to preserve and protect some endangered avian species that are at risk due to habitat destruction, the illegal wildlife trade, diseases, and natural disasters.