Webonly a small percentage of the earthworks built by the adena, hopewell, and fort ancient cultures are effigy mounds, or earthworks in the shape of animals and birds. Effigy mounds can be found throughout the north. Webthe most striking mounds are the 31 built in the shape of animals, most commonly birds and bears.

These are called effigy mounds. Webcommon shapes alligator effigy mound, ohio. The largest, called the great bear mound, is 137. Common shapes for effigy mounds include birds, bear, deer, bison, lynx, panther, turtles, and water spirits. Webeffigy mounds, earthworks in the shape of animals and birds, were raised in north america in areas that now correspond to parts of wisconsin, minnesota, illinois, iowa, and ohio.

Webeffigy mounds, earthworks in the shape of animals and birds, were raised in north america in areas that now correspond to parts of wisconsin, minnesota, illinois, iowa, and ohio.