On the Wagtail (khañjana-kalakṣaṇa) - Verse 9

If it should be seen seated on the back of a buffalo, a camel, an ass, on the bones of animals, on cremation grounds, in the corners of houses, on pebbles or gravels, on rocks, on the walls of towns, on ash or on hair, there would be deaths, diseases and fears in the land.