The word Thursday comes from Old English Thu(n)resdæg, ‘day of thunder,' named after Thunor or Thor, the Germanic god of thunder. Thor is equated with the Greek/Roman god Zeus/Jupiter. The thunderbird, or eagle, was Zeus' sacred bird, said to be his personal messenger. The Golden Eagle can be spotted the Mojave Desert. Shrub (Oak) and Sage are two Mojave plants also associated with the planet Jupiter.