Vampire Finch lives only on Wolf Island in the Galapagos.

There is only one bird in the world that drinks the blood of other living birds, and it is found on only one island in the world.

The Vampire Finch lives only on Wolf Island in the Galapagos.

Because there is no fresh water on the island and because the Vampire Finch lacks the ability to fly far enough away to find any, it has learned to obtain water from another source: the blood of the Nazca Booby.

The Booby hunts for fish in the ocean and congregates on Wolf Island.

While the Booby rests, the Vampire Finch hops on its back and snips a quill on a flight feather, drawing blood.

The Booby blood not only provides water to the Vampire Finch, but nutrients as well.

The Booby apparently does not feel this intrusion and tolerates it.

Nature is amazing.