In the creation stories, both the bird and its egg arrived before the earth was made. According to an ancient Greek story, the god χάος (Chaos) was the first to emerge at the creation of the universe. Soon after her came Gaia (Earth), Tartaros (the Underworld) and Eros (Love). In many versions, Chaos then gave birth to the Birds. In Genesis, the first book of the Bible, God created birds of on the fifth day of creation.