Mudflats on the Yukon Delta National Wildlife Refuge, Alaska. The delta contains the single largest expanse of intertidal habitat in North or South America and is a crucial staging area for millions of migratory shorebirds.
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Mudflats on the Yukon Delta National Wildlife Refuge, Alaska. The delta contains the single largest expanse of intertidal habitat in North or South America and is a crucial staging area for millions of migratory shorebirds.