Where is the best place to produce bird's nest?

Indonesia's bird's nest accounts for 80% of the world's total bird's nest production, Malaysia 13%, Thailand 5% and Vietnam 2%. There are three places of bird's nest (basically tourist resources) in China: Yanyan in Huaiji County, Zhaoqing City, Guangdong Province, Yanzidong in Jianshui County, Honghe Prefecture, Yunnan Province, and Dazhou Island, Hainan Province (only two bird's nests were collected in 2002, and only/|||| 0/6 was left in September 2006. Due to its proximity to the Tropic of Cancer, bird's nest collection is seasonal and its output is scarce, accounting for less than one tenth of the global bird's nest.