《论衡·卷十七·指瑞篇》
这些鸜鹆的筑巢，服鸟的停落，只是偶然来鲁国搭窝和恰巧停在贾谊的屋顶上，占卜的人因为它们是生长在野泽中的飞禽，筑巢停落在都城宫室里面，就看出鲁国将有凶险、传舍人不吉利的征兆了。
是瞿鹆之巢，服鸟之集，偶巢适集，占者因其野泽之物，巢集城宫之内，则见鲁国且凶、传人不吉之瑞矣。
The nesting of these herons and the perching of domestic birds were just coincidences that they came to nest in Lu and happened to perch on Jia Yi's roof. The diviners, because they were birds inhabiting wild marshes, saw the omen of disaster for Lu and the inauspiciousness of the innkeeper because they nested and perched in the palace in the capital.