This means that many white clusters of flowers blossom on the paulownia trees that cover the mountainsides; field mice disappear, having turned into quail (in fact a misconception); and rainbows begin to appear in the sky.
大意是滿山的泡桐開出了白色的小花；田鼠不見了、變成鵪鳥（這其實是古人的錯覺）；天上開始出現彩虹。