portrait of a american rhea in closeup with 2 other rheas in the background, near threatened flightless bird from america

albescens america american americana animal animals araneipes background bird birds closeup common exotic family flight flightless grassland gray greater grey group herd intermidia land legged legs long neck nobilis ornithology ostrich ostriches other pet pets portrait ratite rhea rheas rheidae rheiformes run running savanna swarm threatened together tropical walking zoo zoology