Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park Flower-faced ducks and mandarin ducks in Yuyuantan Park