A bluebird is easy to spot. A male bluebird has a brilliant blue back and flame-orange belly, while a female bluebird has duller colors than the males, much like many other birds. For the longest time, it has been known that the bluebird is a harbinger of happiness. This notion was first held by the Chinese, who saw the bird as immortal, a protector, and a symbol of the sun. Native Americans, too, were in deep awe of the bluebird. Navajos revered it as a spirit in animal form, and the Iroquois believed the bluebird’s song would make the harsh winters bearable. For the Russians, the bluebird represented hope. In 1908, a play named “The Blue Bird” by Maurice Maeterlinck depicted two children in search of the Bluebird of Happiness. This play was adapted into an opera, several films, and a children’s novel, further popularizing the assumption that bluebirds bring happiness.

:https://nationaltoday.com/bluebird-of-happiness-day/