Audubon Great Lakes released a report last year on wetland habitat restoration targets, including in the Calumet region, where about 8,000 acres are expected to be restored by the end of the decade. At Big Marsh, where there’s a water control structure in place, two key marsh bird species were spotted in 2015. By 2018, that number grew to 11. Today, avian visitors include state-threatened and state-endangered species.
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