Grand Lake Saint Marys lies along one of the country’s major migration routes. Waterbirds using the lake as a resting stop include Canada geese, ducks, grebes, swans, egrets, loons, herons, cormorants, and ospreys. Many ducks, geese, and heron also nest here. Bald eagles, magnificent birds long absent from the area, have again nested on the southwest corner of the lake at the wildlife refuge. Other animals of the park include fox squirrel, mink, raccoon, beaver, coyote, white-tailed deer and many others.

The Red Wing Trail, 0.65 miles is in the campground area.