On May 11, 2023, Crown Princess Victoria of Sweden attended World Wildlife Fund's (WWF) annual spring meeting held at Ekolsund Castle in Uppsala. The theme of the meeting was "Wetlands - a key to coping with future climate change". In connection with the annual meeting of the board of trustees, an excursion to Hjalstaviken, which is a nature reserve that has one of Sweden's finest bird lakes, was arranged.