Union County State Fish & Wildlife Area is a haven to wildlife, such as white-tailed deer, bald and golden eagles, and waterfowl. The most prominent wildlife are the phenomenal flocks of Canada geese that may reach between 50,000 and 100,000 in winter. A large portion of the SFWA is a waterfowl refuge, so public use is limited to sightseeing and photography. Boating and fishing is allowed on Grassy Lake and Lyerla Lake during certain times of year. Catfish is the main attraction in Grassy Lake, while Bluegill and Crappie are more common in Lyerla Lake. Approximately 2,050-acres have been designated as a public hunting area primarily for duck and goose, but hunting for deer, doves and more is also available.