Caladrius

The Caladrius is a creature that resembles a white bird and is capable of predicting the fate of a sick person, either death or recovery. If the bird is placed next to a sick person and looks away, the person will die; if it looks at the person then it will absorb the illness from the person. It takes the absorbed illness and burns it off, allowing it to flow away into the wind. Looking at the bird was thought to cure jaundice and its droppings were capable of healing the blind.

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.