How cool is this...
MOTH DRINKS TEARS OF SLEEPING BIRDS
The New Scientist reports the discovery of a moth on the island of Madagascar that drinks the tears of sleeping robins and Newtonia birds. It inserts the tip of its specially evolved proboscis under the bird's eyelid and drinks fluid from the tear duct without waking the birds. As water is readily available elsewhere in the forest, scientists think the moths are seeking out salt rather than water.
From the Center for Biological Diversity http://www.biologicaldiversity.org/swcbd/