slow motion of two yellow-billed oxpeckers on hippo head in mud, hippo motionless, birds pecking and hopping

hippopotamus amphibius oxpecker yellowbilled hippopotamus wildlife tanzania southern africa hippo mud conservation zambia peck birds environment pachyderm zimbabwe mammal unspoiled wilderness dirt safari africa fauna africanus hop symbiosis slowmo pinworm dangerous nature ear herbivore protection slow motion eye closeup water parasite buphagus wild fearless maggot lazy big outdoors massive