Shuttlecocks, also known as birdies or birds, are traditionally made from duck feathers, but nylon shuttlecocks have become more widely used because of their superior durability. Their flight behavior ...
Staff members of a sports product company in Jinping county, Guizhou province, make badminton shuttlecocks. XIANG DINGJIE/XINHUA GUIYANG — A delicate goose feather carries much weight in Jinping ...
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