This quiz is flawed. Is it breeding flamingoes, or just occurrences of flamingoes? Either way, there are countries missing in the list, while there are some dubious ones on the list. For example, Greater Flamingoes are common on the Red Sea coast of Saudi Arabia, but Saudi Arabia is not on the list. Meanwhile, flamingoes of any kind are rare to nonexistent in Nepal.
Upon further research, there are multiple maps out there suggesting flamingos living in different parts of the world, often contradicting each other. But, I've added Saudi Arabia