Here their breeding habitat seems relatively secure. However, because loons are migratory and most spend part of each year outside the park, their protection is not ensured. Common Loons nest on the ground along lakeshores, on islands, or among wet soggy aquatic vegetation. Females lay 1- 3 eggs in spring following acrobatic courtship behavior. After hatching, the fuzzy young leave the nest in just a few days and are able to swim, dive, and walk.
Young loons are vulnerable and fall prey to hawks, mink, turtles, and other predators.
Common Loons prefer to eat fish, but will settle for a frog, small reptile, insect, leech, or aquatic vegetation. Loons can dive and swim very proficiently. Dives last 0.5 - 3.0 feet.