The Easter Bunny, also called the Easter Rabbit or Easter Hare, is a folkloric figure and symbol of Easter, depicted as a rabbit bringing Easter eggs. Originating among German Lutherans, the “Easter Hare” originally played the role of a judge, evaluating whether children were good or disobedient in behaviour at the start of the season of Eastertide. The Easter Bunny is sometimes depicted with clothes.
In legend, the creature carries colored eggs in his basket, candy, and sometimes also toys to the homes of children, and as such shows similarities to Santa Claus or the Christkind, as they both bring gifts to children on the night before their respective holidays. The hare was a popular motif in medieval church art. In ancient times, it was widely believed that the hare was a hermaphrodite. Eggs, like rabbits and hares, are fertility symbols of antiquity.
Since birds lay eggs and rabbits and hares give birth to large litters in the early spring, these became symbols of the rising fertility of the earth at the Vernal Equinox. The idea of an egg-giving hare came to the U.S. in the 18th century. Protestant German immigrants in the Pennsylvania Dutch area told their children about the “Osterhase“, sometimes spelled “Oschter Haws“. According to the legend, only good children received gifts of colored eggs in the nests that they made in their caps and bonnets before Easter.
More info: https://en.wikipedia.org