To find the answer the zoological institute of the Academia Sinica and the zoological faculty of Taiwan University have already begun joint research. Apart from investigating habits and demography, they are even working hard on the voices of the birds.
為尋求答案，目前中研院動物所、台大動物系已合作展開研究，除習性及棲地調查外，也更上層樓﹘﹘在鳥兒的聲音下功夫。