Mercer, acclaimed as the "Loon Capital of the World," proudly hosts Claire d'Loon, the third-largest loon statue globally. Claire has been standing outside the Mercer Chamber of Commerce building since May 1981, weighing 2,000 pounds and towering 16 feet tall. Notably, Claire features an interactive voice box, offering visitors a chance to experience the diverse calls of the loon.

Mercer boasts the highest concentration of common loons worldwide, as confirmed by wildlife studies. Annually, the town celebrates its affinity for these birds with the vibrant "Loon Day" festival, featuring an arts and crafts fair, live music, and the thrilling loon calling contest.