sentences:  It officially closed in June 2020, following significant loss of income caused by the Covid-19 pandemic crisis.The aviary, which cost £7 million to build, was at its highest point and had a total volume of .This free flying enclosure was home to mammals and birds including South American fur seals, African penguins, macaroni penguins, sea ducks, pied avocet, redshanks, black-necked stilts, ruffs, and terns.