Gravel Island National Wildlife Refuge, Bird sanctuary in Liberty Grove, Wisconsin.
Gravel Island National Wildlife Refuge consists of two Lake Michigan islands, Spider Island at 23 acres and Gravel Island at 4 acres.
The refuge establishment in 1913 through Executive Order 1678 marked a commitment to protect native bird breeding habitats in the Great Lakes region.
The area serves as a research site for ornithologists studying migration patterns and breeding behaviors of various water birds and shore birds.
The islands remain closed to public access, and boats must maintain a minimum distance of a quarter mile to protect nesting colonies.
The refuge contains one of the westernmost breeding sites for great black-backed gulls in North America.
Location: Wisconsin
Website: https://fws.gov/refuge/gravel_island
GPS coordinates: 45.20860,-86.99470
Latest update: March 11, 2025 12:08
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