《汉书·志·五行志中之下》
京房《易传》说： 奸臣在朝，由之而出的灾祥就是燕子生雀，诸侯王被罢黜。 
京房《易传》曰： 贼臣在国，厥咎燕生爵，诸侯销。 
Jing Fang's "Yi Zhuan" says: When a treacherous minister is in the court, the disaster and omen that result are represented by swallows giving birth to sparrows, and feudal lords being dismissed.