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.
Okokuqala, yingoba kuphenduka kubize kakhulu ukufuya izinkukhu isikhathi eside bese okwesibili, yingoba iNingizimu Afrika inendali engabhalisiwe echumile yezinkukhu eziphilayo (izikhukhukazi eseziqedile ukuzalela).