great or eastern or rosy white pelican pelecanus onocrotalus in south africa swimming in a lake with a green background

africa african american animal aquatic avian background beak beautiful bill bird birding closeup eastern feather feathered great green group gular lake large marsh migratory nature onocrotalus ornithology outdoor pelecanus pelican plumage portrait pouch reserve sea swamp watching water waterbird wetland white wilderness wildlife wing zoo