"a group of whitetail deer"

The white-tailed deer (Odocileus virginianus) is also known as the Virginia deer. It is a medium-sized deer, native to all but five states of the United States and in South America as far south as Peru. It has undergone a population decline and is classified as Near Threatened. It can be recognized by the characteristic white underside to its tail, which it shows as a signal of alarm by raising the tail during escape.