Firstly, because keeping birds for long periods is very expensive, and secondly, because there is a real estate market for live birds in South Africa.
Kwekucala, njengoba kuyadula kugcina letinyoni sikhatsi lesidze futsi kwesibili, ngoba iNingizimu Afrika inendlela yekukhula ngemakethe yetinyoni letiphilako (tikhukhukati letikhokhiwe).