The Whooper Swan National Nature Reserve in Rongcheng, a county-level city in Weihai, Shandong province recently welcomed its first group of migratory whooper swans, marking the start of the migratory season for the species. The first migratory swans arrive at the national nature reserve in Rongcheng, Shandong province to spend the winter. Whooper swans stay for the winter in Rongcheng, …