《宋书·志·卷二十九》
元嘉十一年五月丁丑曰，查郡西安人宗显得白雀，青州刺史段宏献给朝廷。
元嘉十一年五月丁丑，齐郡西安宗显获白雀，青州刺史段宏以献。
Zong Xiande, a person from Xi'an, Linqu County, found a white sparrow on the Ding Chou day in May in the 11th year of the Yuanjia period. The governor of Qingzhou, Duan Hong presented it to the court.