oxpecker birds eat pests that bother rhinoceroses. Is this an example of mutualism or commensalism? why?
mutualism, because the oxpecker bird is getting fed and the rhinoceros doesn't have to worry about his pests. they both benefit from this symbiotic relationship.
Mutualism because they are both benefitting. The bird gets to eat and the rhinoceros doesn't have to worry about about beng bothered.