Depending on the people telling the story, the Thunderbird is either a singular entity, or a species. In both cases, it is intelligent, powerful, and wrathful. All agree that you should go out of your way to keep from getting them angry. --from Wikipedia 雷鳥乃神鳥也。其聰明絕頂，力大無窮，怒不可遏。爾等皆宜避之，萬莫惹其怒也。