Tuttle Marsh is a 5,000 acre wetland project consisting of over 3-1/2 miles of level ditch network and a 2-1/2 mile low-head dam with water level control structures. To optimize nesting potential for ducks, geese and other birds, 35 earthen nesting islands have been constructed within the 380 acre impoundment area. These are managed for grassy nesting cover to provide optimum nesting conditions with a minimum of perdition probability.
Birds of the marsh include: Mallard Ducks, Wood Duck, Teal-Green Wing and Blue Wing, Bufflehead, Hooded Merganser, Lesser Scaup, Northern Shoveler, Canada Goose, Whip-Poor-Will, Northern Shrike, Tree Swallow, Purple Martin, American Coot, Common Gallinule, American Woodcock, Common Snipe, Red Winged Blackbird, Great Blue Heron, Osprey, Cooper's Hawk, Sharp-Shinned Hawk, Red-tailed Hawk, Rough-Legged Hawk, American Kestrel, American Crow, Pied-Billed Grebe, Great Egret, Green Heron, Black-Crowned Night Heron, Redheaded Woodpecker, Killdeer, Greater Yellowlegs, Indigo Bunting, Wild Turkey, Ruffed Grouse, American Goldfinch, Belted Kingfisher, Barred Owl, Great Horned Owl, Mourning Dove, Blue Jay, Northern Cardinal, Eastern Kingbird, Eastern Bluebird, Eastern Pewee, Cedar Waxwing, American Robin, Gray Catbird, Northern Mockingbird, Field Sparrow, American Tree Sparrow, Chipping Sparrow, Grasshopper Sparrow, Swamp Sparrow, Virginia Rail, Bald Eagle, Black Tern and Sandhill Crane.
The Great Blue Heron Rookery had 15 nests in 1995 and was still growing. The Forest Service has also built Osprey Platforms with funds provided by the Iosco Audubon Group.
In addition to the many bird species, the marsh and surrounding higher ground is also home to many game and non-game species such as black bear, white-tail deer, muskrats, beaver, mink, flying squirrels, otter, fox, coyotes, and other mammals as well as a multitude of insects, fish, amphibians and reptiles.
Access: From Oscoda take Old US-23 west 5-3/4 miles to Tuttle Marsh Road. Turn left on to the Tuttle Marsh Wildlife Area