Spotted skin and twitching ears often signal that a giraffe is already occupied by oxpeckers. The birds move like inspectors across the towering mammal’s hide, heads buried in fur, beaks prying along scars and folds. From the ground it looks like freeloading. In biological terms, it is a much messier, almost negotiated coexistence.Oxpeckers feed on ticks, dead skin and dried blood, targeting spots...More