Ostrich (Struthio camelus). Male on the right and female with two chicks on the ridge of a grass-grown sand dune. Feeding on yellow Devil's Thorn (Tribulus zeyheri) flowers. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa.

struthio camelus tribulus terrestris tribulus zeyheri ostrich struthio camelus medicinal plant natural area desert adult female male couple outdoor profile shot low angle shot overview day south africa south african protected areas south africa wild flower desert plant sexual dimorphism apteros national park transborder park brood eggs ground cover plant cites appendix 1 annual plant fledgling food search blue sky january kgalagadi transfrontier park za kalahari desert of puncturevine tribulus terrestris copy space nobody devil's thorn tribulus zeyheri kgalagadi transfrontier park ostriches medicinal plants medicinal herb medicinal herbs therapeutic plant therapeutic plants therapeutic herb therapeutic spices officinal plant officinal plants officinal herb officinal spices nature natural areas ecosystem ecosystems desertic areas desert areas desert area desertic zone desertic zones desertic area adults females males outdoors outsides outside profile sights profile sight profile shots profile view profile views side view low angle shots low angle view low angle sight low angle views low angle sights overviews global sight global sights full length days daytime rsa ksa republic of south africa south african protected area south africa south african national parks south africa wild flowers barren plant barren plants desert plants sexual dimorphisms sexual distinguishability sexual distinguishabilities national parks sensitive natural areas transnational park transnational parks transborder parks transfrontier park transfrontier parks clutch clutches broods eggs ground cover plants creeper creepers creeping plant creeping plants annual plants small bird small birds chick chicks least concern species food searches blue skies good weather nice weather puncture vine devil's thorn small caltrops with nobody kgalagadi aptera bird sauropsid vertebrate chordate wild animal animal plant use agronomy natural resources use naturalness area stage of development individual pair enumeration shot ambiance southern africa africa flower flora species particularity species general morphology morphology organism morphology zoology environment protection environment management biodiversity management environment family climbing creeping plant convention on international trade in endangered species of wild cites growing cycle young seek sky meteorological phenomenon meteorology science northern cape province zygophyllaceae family sapindales order