Bird, pronounced as bud, is a kind of bird recorded in Shan Hai Jing, an ancient book before Qin Dynasty. It can't exist in reality.
"The book of mountains and seas. "Xishan Jinger" records that this bird looks like an ordinary magpie, but it has red and black feathers, two heads and four feet. People can lift it to make a fire. The original text is: "... 200 miles west, called Cuishan. There are many brown peaks above and many bamboo arrows below. The sun is like a magpie in happy ever after. It is red and black, has two or four feet, and can resist fire. ……"
brief introduction
Shan Hai Jing recorded many strange animals, most of which were assembled by the ancients through imagination. In a scientific sense, it cannot be established. However, these records are valuable for studying the ancient geography and cultural customs of China.