What is bird stone artifact?

The bird stone artifact is an ancient Native American artifact dating back to between 2000 BC and 1500 AD. It is carved from various types of stone, usually quartzite or limestone. The bird stone artifact takes on many different forms, but it generally depicts a bird or bird-like figure in a stylized or abstracted form. It is not clear what the purpose of these artifacts was, but it is believed that they may have played a role in religious or ceremonial practices. The bird stone artifacts have been found in various locations across eastern North America, including the Great Lakes region and the Ohio River Valley. They are considered important examples of Native American art and are prized by collectors and museums.