Hawk Hollow’s gently rolling landscape of meadows, mature woodlands and fens provides rich habitat for a wide variety of native plants and wildlife. This large preserve contains one of the largest unbroken blocks of grassland habitats in the county. This grassland is home to several uncommon bird species, including Henslow’s sparrows, bobolinks, eastern meadowlarks, grasshopper sparrows and savanna sparrows. It has 5.6 miles of trails that connect to Mallard Lake and West Branch forest preserves as well as the Bartlett Park District trail system. contains and a stretch of the West Branch DuPage River It also offers fishing and a 34-acre off-leash dog area.
Hawk Hollow has 5.6 miles of trails that meander through the preserve, connecting to trails in Mallard Lake and West Branch forest preserves and the Bartlett Park District trail system.