One of the interesting things we learned on safari in Botswana was about the interrelationship of species - which ones hang out or travel together or, in this case, help each other out. The kudu are plagued by flies and mites; the red billed oxpeckers eat those pesky critters for snacks. You can see oxpeckers perched on either side of this kudu's face, getting nourishment for themselves and giving the kudu relief from the bugs.