Located in Baoshan City, Yunnan Province, the Gaoligong Mountains are an important part of the southern end of the Hengduan Mountains and an crucial ecological barrier in southwest China. The area features dense forests and a rich diversity of flora and fauna, earning it the title of "world species gene bank." What unique sights can we witness during the "vertical migration" season of birds in Gaoligong Mountain? Why do birds migrate vertically here? Let's follow researchers to explore the Gaoligong Mountains and find the answers!