Wiarton Willie is the name given to a Canada groundhog who lives in the community of Wiarton in Bruce County, Ontario. Every February 2, on Groundhog Day, Willie takes part in the local Wiarton Willie Festival. His role is to predict whether there will be an early spring. Although the original Wiarton Willie died in 1999, the Wiarton Groundhog Day celebrations continue each year with a successor of the original Willie (except in 1999 and 2021 where, due to the previous Willies' deaths, no groundhog was used), and each successor is also referred to as Wiarton Willie.
Groundhog Day, featuring Wiarton Willie, is a popular annual festival in Wiarton and is similar to events in other locations in North America. A midwinter celebration involving an animal with predictive powers was an element of Celts culture. Eight Wiccan/Neopagan Sabbats: Imbolc: Jan-31 to Feb-02. Religious Tolerance.org. Retrieved on: November 4, 2007. The link between weather prediction and the day is said to have been inspired by an old Scottish couplet: "If Candlemas Day is bright and clear/ There'll be two winters in the year."CBC News (February 2, 2007) "What Wiarton Willie sees." CBC News In Depth: Groundhog Day. Retrieved on: November 3, 2007.
Wiarton Willie himself is a more recent addition to the festivities. In the early years, prognostication was provided by the "mythical" trio of groundhogs Grundoon, Muldoon and Sand Dune. Willie appeared on the scene in the 1980s. Wiarton Willie's predictive powers are attributed (by his followers) to his situation on the 45th parallel, exactly halfway between the Equator and the North Pole. He is claimed locally to be accurate in his prognostications around 90% of the time; scientists have estimated Willie's accuracy at 25%.
Wiarton Willie's keepers groom understudy, nicknamed "Wee Willie" during the elder groundhog's lifetime, to eventually replace the reigning Wiarton Willie when they die. Wiarton Willies have typically had lifespans longer than the 4–9 years of a typical groundhog, and thus other groundhogs may have served in the role unreported. Wiarton Willie II was reported as deceased on July 11, 2006, after fighting an infection for the previous month.
On September 15, 2017, Wiarton Willie III died at 13. Two-year-old Wee Willie became Wiarton Willie IV on September 30, 2017, coinciding with a memorial service for the old Willie. Wiarton Willie IV died in 2020, leading to the 2021 prediction being made without the presence of a groundhog. Wiarton Willie IV's death was not publicly announced until November 2021. Wiarton Willie V was introduced at the 2022 Groundhog Day celebration; he is the first brown groundhog to assume the position.
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