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The Shiawassee National Wildlife Refuge is a 9,427 acre (38 km2) National Wildlife Refuge in Saginaw County managed by the United States Fish and Wildlife Service. It is located in the central portion of the lower peninsula of the U.S. state of Michigan, approximately 25 miles (40 km) south of the Saginaw Bay in Lake Huron and five miles (8 km) south of the city of Saginaw in the county's Spaulding and James townships. It was established in 1953 to provide habitat for migratory waterfowl. Known locally as the Shiawassee Flats, the refuge lies in the Saginaw Bay watershed, historically one of the largest and most productive wetland ecosystems in Michigan. The Bad, Flint, and Cass Rivers flow into the Shiawassee River in the refuge. Here also the Shiawassee converges with the Tittabawassee River to form the Saginaw River. ==Wildlife and Habitat== Refuge habitats include riparian, floodplain/bottomland hardwood forests, and emergent marshes, as well as shallow managed wetlands and croplands. Over 265 species of birds have been documented on the refuge, including raptors, shore and wading birds, and more than 100 songbird species. Shiawassee Refuge is designated as a United States Important Bird Area (IBA) for its global significance to migratory waterfowl. It is also one of six focus areas designated by the Great Lakes/St. Lawrence Basin Joint Venture of the North American Waterfowl Management Plan. During peak populations in late October, up to 25,000 Canada geese and 40,000 ducks are present. A great diversity of other wildlife associated with freshwater marshes and floodplain forests are also found here. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Shiawassee National Wildlife Refuge」の詳細全文を読む スポンサード リンク
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