When did Egret and Bai Ou appear?

In Bai Ou, egrets appear in spring and autumn, and in winter.

Bai Ou Gully Birds. It is a medium-sized seagull. Bai Ou itself has poor heat dissipation function, and winter is the most suitable season for activities in Bai Ou. In winter, the head and neck are scattered with brown fine lines, and sometimes the corners of the mouth are black.

Distributed in North America, Eurasia and North Africa. Egrets migrate in spring and autumn, so they usually move in spring and autumn. Egrets 13 species. Among them, Great Egret, Middle Egret, Egret (Little Egret), Yellow-billed Egret and Snow Egret are all white, commonly known as Egret.