Half Submerged hippo in lake with yellow-billed oxpeckers on his back, Kruger park

half submeged hippopotamus yellowbilled oxpeckers lake natural habitat resting bath animal african wild animals submerged mammal environment conservation kruger national park outdoors nature national park oxpecker parasite pond reserve south africa wilderness hippo wildlife birs species animals in the wild africa relaxing river stream safari hippos massive bathing diving hipopotam submerging aggressive herbivore dangerous natural hippopotamus amphibius water