Bubulcus Ibis -

: Around 1877, they crossed the Atlantic Ocean from Africa to South America.

: They often stand directly on an animal's back to eat ticks and parasites. bubulcus ibis

: Today, they are found on every continent except Antarctica. Nature's Clever Hitchhikers : Around 1877, they crossed the Atlantic Ocean

: They trail behind cattle, horses, and tractors to catch insects stirred up by movement. : Around 1877