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.
Michigan designated robin redbreast (American robin) as the official state bird in 1931 after an election held by the Michigan Audubon Society. The legislation noted that the robin redbreast is the best known and best loved of all the birds in the state of Michigan.. The American robin (Turdus migratorius) is also the state bird of Connecticut and Wisconsin.