New chief executive Dr Lesley Dickie said that Durrell must scrutinise everything it does to make sure it is not harming the environment.
The zoo has now stopped selling drinks in plastic bottles and products containing palm oil at the Dodo Restaurant, and hopes to make changes to Café Firefly in the near future.
They now serve Water in a Box, which is a range of spring water boxed in Somerset’s Mendip Hills.
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