Before setting off for the US, Sun, who has never thought of settling permanently overseas, quite naturally accepted a research plan on the tawny fish owl (Ketupa flavipes), proposed by the Council of Agriculture, as the topic for his doctoral research.
從未想過離開台灣、在外生根的他，很自然的在出國前，接受了農委會提供的黃魚鴞研究計畫，作為博士論文的研究主題。