when did the duck billed platypus become extinct
There is a threat of extinction but they are not completely extinct
Platypus
"extinction of local populations across about 40% of the range". Under projections of climate change projections to 2070, reduced habitat due to drought would lead to 51–73% reduced abundance and 36–56% reduced metapopulation occupancy within 50 years respectively.
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Platypus [SEP] Status and threats
Researchers have worried for years that declines have been greater than assumed. In January 2020, researchers from the University of New South Wales presented evidence that the platypus is at risk of extinction, due to a combination of extraction of water resources, land clearing, climate change and severe drought. The study predicted that, considering current threats, the animals' abundance would decline by 47%–66% and metapopulation occupancy by 22%–32% over 50 years, causing "extinction of local populations across about 40% of the range". Under projections of climate change projections to 2070, reduced habitat due to drought would lead to 51–73% reduced abundance and 36–56% reduced metapopulation occupancy within 50 years respectively.