Red-billed oxpecker eating snack from hippopotamus
A pod of hippopotamuses naps on the Mara River as a red-billed oxpecker (Buphagus erythrorhynchus) walks across their backs. He finds a tasty morsel at just after 1:03 that requires some effort to dislodge from the hippopotamus' head. It appears to be a large parasite larva, but feel free to comment with other theories.
