Male ostrich (Struthio camelus) walking on lush grassy plain, Serengeti National park, Tanzania

field horizon outdoors day daytime animal grassland plain close up cloudy lush africa walking portrait african bird fields grassy safari ostrich plumage side view tanzania serengeti national park world heritage site horizon over land plains portraits aves animals cloud wildlife outside grass nobody clouds birds national parks national park male feathers one animal color image ostriches unesco close up unesco world heritage site animals in the wild focus on foreground serengeti struthio camelus no one no people male animal common ostrich