FILE - In this June 21, 2018 file photo, an adult whooping crane, a critically endangered species, lets out a defensive call, at the Audubon Nature Institute's Species Survival Center in New Orleans. Perennially endangered and for decades absent from these marshy wetlands, Louisiana’s whooping cranes can add another milestone to their long journey back from the brink of extinction: They survived 2020. (AP Photo/Gerald Herbert, Fiel)
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