People can clench and grind without being aware of it. It can happen during both the day and night, although sleep-related bruxism is often a bigger problem because it is harder to control. There is some disagreement about the cause of bruxism. Daily stress may be the trigger in many people.
The Blue Jay has a very large range, extending to around 6,700,000 square kilometers. It prefers a boreal temperate, subtropical, tropical forest ecosystem and is native to North America, Saint Pierre, and Miquelon.
Missouri's state bird is the Bluebird. This bird became Missouri's state bird on March 30, 1927. These birds are supposed to be a symbol of happiness. This bird has red, blue, and white feathers. People only see these birds from Spring until Fall.