red-billed oxpecker picking on impala

aepyceros africa african angle animal antelope behave behavior behavioral behaviour behavioural below billed bird buck buphagus carefree color colour concern conduct depth eat eating enjoying enjoyment erythrorhynchus feed feeding field from fun funny gazelle happiness happy image impala joy joyful krueger kruger least low male mammal melampus mpumalanga national natural nature nobody oxpecker park people red september shallow side south southern starling sturnidae symbiosis travel two vertical view wild wildlife