Birdwatching is a treat here. In the spring and fall, you may spot mallards, Canadian geese, redheads, and others. During the summer, the marsh birds are present. And in the winter months, you may find cardinals, blue jays and many other sparrows. Fishing is also very popular at Black Hawk Lake. As you hike, you may see plenty of wildlife, waterfowl, many species of songbirds and deer. You will also enjoy a variety of plants and trees. During the winter, iceboats have reached speeds of 100 mph on the frozen lake.